{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T11:02:28Z","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-snort3ssl-FBEKYXpH","slug":"cisco-sa-ftd-snort3ssl-fbekyxph","vendor":"Cisco","title":"Cisco Secure Firewall Threat Defense Software Snort 3 SSL Memory Management Denial of Service Vulnerability","summary":"A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a logic error in memory management when a device is performing Snort 3 SSL packet inspection. An attacker could exploit this vulnerability by sending crafted SSL packets through an established connection to be parsed by the Snort 3 Detection Engine. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts. 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-snort3ssl-FBEKYXpH This advisory is part of the March 2026 release of the Cisco Secure Firewall ASA, Secure FMC, and Secure FTD Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2026 Semiannual Cisco Secure Firewall ASA, Secure FMC, and Secure FTD Software Security Advisory Bundled Publication.","severity":"Medium","published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH/csaf/cisco-sa-ftd-snort3ssl-FBEKYXpH.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":9,"public_evidence_count":9,"kev_count":0,"highest_epss":0.00413},"cves":[{"id":"CVE-2026-20052","kev":false,"epss":{"score":0.00413,"percentile":0.33603,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"}}],"public_evidence":[{"product":{"name":"Cisco Secure Firewall 4200 Series","slug":"cisco-secure-firewall-4200-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.0 when installed on Cisco Secure Firewall 4200 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Secure Firewall 4200 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Secure Firewall 4200 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Secure Firewall 4200 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Secure Firewall 4200 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Secure Firewall 4200 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":1},{"product":{"name":"Cisco Firepower 2100 Series","slug":"cisco-firepower-2100-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 2100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":2},{"product":{"name":"Cisco Firepower 1000 Series","slug":"cisco-firepower-1000-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 1000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":3},{"product":{"name":"Cisco 3000 Series Industrial Security Appliances (ISA)","slug":"cisco-3000-series-industrial-security-appliances-isa","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA); Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":4},{"product":{"name":"Cisco Firepower 9000 Series","slug":"cisco-firepower-9000-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 9000 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":5},{"product":{"name":"Cisco Firepower 4100 Series","slug":"cisco-firepower-4100-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 4100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":6},{"product":{"name":"Cisco Secure Firewall Threat Defense Virtual","slug":"cisco-secure-firewall-threat-defense-virtual","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Secure Firewall Threat Defense Virtual; Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":7},{"product":{"name":"Cisco Secure Firewall 3100 Series","slug":"cisco-secure-firewall-3100-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.4.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Secure Firewall 3100 Series; Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":8},{"product":{"name":"Cisco Secure Firewall 1200 Series","slug":"cisco-secure-firewall-1200-series","vendor":"Cisco"},"cve":{"id":"CVE-2026-20052"},"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":"2026-07-20T04:51:16Z","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 7.6.0 when installed on Cisco Secure Firewall 1200 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":0.00413,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2026-03-04T16:00:00Z","updated_at":"2026-03-04T16:00:00Z","advisory_updated_at":"2026-03-04T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH"},"row_display_order":9}]}