{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T10:12:13Z","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","advisory":{"id":"cisco-sa-ftd-icmpv6-dos-4eMkLuN","slug":"cisco-sa-ftd-icmpv6-dos-4emklun","vendor":"Cisco","title":"Cisco Firepower Threat Defense Software and Cisco FirePOWER Services ICMPv6 with Snort 2 Denial of Service Vulnerability","summary":"A vulnerability in ICMPv6 inspection when configured with the Snort 2 detection engine for Cisco Firepower Threat Defense (FTD) Software or Cisco FirePOWER Services could allow an unauthenticated, remote attacker to cause the CPU of an affected device to spike to 100 percent, which could stop all traffic processing and result in a denial of service (DoS) condition. FTD management traffic is not affected by this vulnerability. This vulnerability is due to improper error checking when parsing fields within the ICMPv6 header. An attacker could exploit this vulnerability by sending a crafted ICMPv6 packet through an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition. Note: To recover from the DoS condition, the Snort 2 Detection Engine, the Cisco FTD device, or the Cisco FirePOWER Services device may need to be restarted. For more information, see the Details section of this advisory. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN This advisory is part of the November 2023 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: November 2023 Semiannual Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.","severity":"High","published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN/csaf/cisco-sa-ftd-icmpv6-dos-4eMkLuN.json","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure."},"freshness":{"last_source_refreshed_at":"2026-07-21T05:16:34Z","latest_source_refresh_at":"2026-07-21T05:16:34Z","oldest_source_refresh_at":"2026-07-21T03:00:03Z","all_sources_fresh":true,"sources":[{"source":"cisco_advisories","label":"Cisco advisories","last_success_at":"2026-07-21T03:00:03Z","stale":false},{"source":"cisco_csaf","label":"Cisco CSAF","last_success_at":"2026-07-21T05:14:24Z","stale":false},{"source":"nvd_cves","label":"NVD CVEs","last_success_at":"2026-07-21T05:16:30Z","stale":false},{"source":"cisa_kev","label":"CISA KEV","last_success_at":"2026-07-21T05:16:31Z","stale":false},{"source":"first_epss","label":"EPSS","last_success_at":"2026-07-21T05:16:34Z","stale":false}]},"summary":{"cve_count":1,"visible_product_count":8,"public_evidence_count":8,"kev_count":0,"highest_epss":0.00693},"cves":[{"id":"CVE-2023-20083","kev":false,"epss":{"score":0.00693,"percentile":0.48785,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"}}],"public_evidence":[{"product":{"name":"Cisco Firepower 2100 Series","slug":"cisco-firepower-2100-series","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.10 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.11 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.12 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.13 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.14 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.15 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.16 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.17 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.18 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.2 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.4 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.5 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.6 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.7 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.8 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.9 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.2 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.4 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.2 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco Firepower 2100 Series","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":1},{"product":{"name":"Cisco 3000 Series Industrial Security Appliances (ISA)","slug":"cisco-3000-series-industrial-security-appliances-isa","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.10 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.11 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.12 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.13 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.14 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.15 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.16 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.17 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.18 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.4 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.5 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.6 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.7 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.8 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.9 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.4 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":2},{"product":{"name":"Cisco ASA 5500-X Series Firewalls","slug":"cisco-asa-5500-x-series-firewalls","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.10 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.15 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.2 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.4 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.5 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.7 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.2 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.4 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.2 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7.1 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco ASA 5500-X Series Firewalls; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco ASA 5500-X Series Firewalls","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":3},{"product":{"name":"Cisco Firepower 9000 Series","slug":"cisco-firepower-9000-series","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.4 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.2 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco Firepower 9000 Series","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":4},{"product":{"name":"Cisco Firepower 1000 Series","slug":"cisco-firepower-1000-series","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco Firepower 1000 Series","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":5},{"product":{"name":"Cisco Firepower 4100 Series","slug":"cisco-firepower-4100-series","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.2 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco Firepower 4100 Series","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":6},{"product":{"name":"Cisco Secure Firewall Threat Defense Virtual","slug":"cisco-secure-firewall-threat-defense-virtual","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.10 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.11 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.13 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.14 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.15 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.16 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.17 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.2 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.5 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.6 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.7 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.9 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco Secure Firewall Threat Defense Virtual","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":7},{"product":{"name":"Cisco Secure Firewall 3100 Series","slug":"cisco-secure-firewall-3100-series","vendor":"Cisco"},"cve":{"id":"CVE-2023-20083"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:51:46Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.2 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2 when installed on Cisco Secure Firewall 3100 Series","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00693,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2023-11-01T16:00:00Z","updated_at":"2023-11-16T21:10:27Z","advisory_updated_at":"2023-11-16T21:10:27Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-icmpv6-dos-4eMkLuN"},"row_display_order":8}]}