{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T10:06:35Z","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-cat3k-dos-ZZA4Gb3r","slug":"cisco-sa-cat3k-dos-zza4gb3r","vendor":"Cisco","title":"Cisco IOS XE Software for Catalyst 3650 and Catalyst 3850 Series Switches Denial of Service Vulnerability","summary":"A vulnerability in Cisco IOS XE Software for Cisco Catalyst 3650 and Catalyst 3850 Series Switches could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper resource management when processing traffic that is received on the management interface. An attacker could exploit this vulnerability by sending a high rate of traffic to the management interface. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. 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-cat3k-dos-ZZA4Gb3r This advisory is part of the September 2023 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.","severity":"High","published_at":"2023-09-27T16:00:00Z","updated_at":"2023-09-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r/csaf/cisco-sa-cat3k-dos-ZZA4Gb3r.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":3,"public_evidence_count":3,"kev_count":0,"highest_epss":0.00653},"cves":[{"id":"CVE-2023-20033","kev":false,"epss":{"score":0.00653,"percentile":0.47236,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"}}],"public_evidence":[{"product":{"name":"Cisco IOS XE Software","slug":"cisco-ios-xe-software","vendor":"Cisco"},"cve":{"id":"CVE-2023-20033"},"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":"2026-07-20T02:52:06Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"16.11.1; 16.11.1c; 16.11.1s; 16.12.1; 16.12.1s; 16.12.1z; 16.12.1z1; 16.12.1z2; 16.12.2; 16.12.2a; 16.12.2s; 16.12.2t; 16.12.3a; 16.12.3s; 16.12.5a; 16.12.5b; 16.12.6; 16.12.6a; 16.12.7; 16.12.8; 16.12.9; 16.3.1; 16.3.10; 16.3.11; 16.3.1a; 16.3.2; 16.3.4; 16.3.5; 16.3.5b; 16.3.6; 16.3.7; 16.3.8; 16.3.9; 16.4.1; 16.5.1; 16.5.1a; 16.6.1; 16.6.10; 16.6.2; 16.6.3; 16.6.4; 16.6.4a; 16.6.4s; 16.6.5; 16.6.6; 16.6.7; 16.6.8; 16.6.9; 16.7.1; 16.8.1; 16.8.1a; 16.8.1s; 16.9.1s; 16.9.2s; 16.9.3a; 16.9.3s; 16.9.5; 16.9.6; 16.9.7; 16.9.8; 17.1.1; 17.1.1a; 17.1.1s; 17.1.1t; 17.1.2; 17.1.3; 17.10.1; 17.10.1b; 17.11.1; 17.11.1a; 17.12.1; 17.12.1a; 17.12.1x; 17.12.1y; 17.12.1z; 17.12.1z1; 17.12.1z2; 17.12.1z3; 17.12.1z4; 17.12.1z5; 17.12.1z6; 17.12.2; 17.12.2a; 17.12.3; 17.12.3a; 17.12.4; 17.12.4a; 17.12.4b; 17.12.5b; 17.12.5c; 17.12.5d; 17.12.6; 17.12.6a; 17.12.6b; 17.12.7; 17.12.7a; 17.12.7b; 17.13.1a; 17.14.1a; 17.15.1; 17.15.1a; 17.15.1b; 17.15.1w; 17.15.1x; 17.15.1y; 17.15.1z; 17.15.2; 17.15.2a; 17.15.2b; 17.15.2c; 17.15.3; 17.15.3a; 17.15.3b; 17.15.4; 17.15.4c; 17.15.4d; 17.15.4s1; 17.15.5; 17.15.5a; 17.16.1; 17.16.1a; 17.17.1; 17.18.0EFT; 17.18.1; 17.18.1a; 17.18.1w; 17.18.1x; 17.18.1y; 17.18.2; 17.18.3; 17.18.3a; 17.2.1; 17.2.1a; 17.2.1r; 17.2.1v; 17.2.2; 17.2.3; 17.3.1a; 17.3.1w; 17.3.1x; 17.3.1z; 17.3.2; 17.3.2a; 17.3.3; 17.3.3a; 17.3.4; 17.3.4a; 17.3.4b; 17.3.4c; 17.3.5; 17.3.5a; 17.3.5b; 17.3.6; 17.3.7; 17.3.8; 17.3.8a; 17.4.1; 17.4.1a; 17.4.1b; 17.4.1c; 17.4.2; 17.4.2a; 17.5.1; 17.5.1a; 17.5.1b; 17.5.1c; 17.6.1; 17.6.1a; 17.6.1w; 17.6.1x; 17.6.1y; 17.6.1z; 17.6.1z1; 17.6.2; 17.6.3; 17.6.3a; 17.6.5; 17.6.5a; 17.6.6; 17.6.6a; 17.6.7; 17.6.8; 17.6.8a; 17.7.1; 17.7.1a; 17.7.1b; 17.7.2; 17.8.1a; 17.9.1; 17.9.1a; 17.9.1w; 17.9.1x; 17.9.1x1; 17.9.1y; 17.9.1y1; 17.9.2; 17.9.2a; 17.9.3; 17.9.3a; 17.9.4; 17.9.4a; 17.9.5; 17.9.5a; 17.9.5b; 17.9.5c; 17.9.5d; 17.9.5e; 17.9.5f; 17.9.6; 17.9.6a; 17.9.6b; 17.9.7; 17.9.7a; 17.9.7b; 17.9.8; 17.9.9; 26.1.1; 26.1.1a","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":0.00653,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2023-09-27T16:00:00Z","updated_at":"2023-09-27T16:00:00Z","advisory_updated_at":"2023-09-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r"},"row_display_order":1},{"product":{"name":"Cisco Adaptive Security Appliance (ASA) Software","slug":"cisco-adaptive-security-appliance-asa-software","vendor":"Cisco"},"cve":{"id":"CVE-2023-20033"},"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":"2026-07-20T02:52:06Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"16.3.3; Cisco IOS XE Software Release 16.11.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.11.1c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.11.1s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.1s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.1z when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.1z1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.1z2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.2a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.2s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.2t when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.3s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.4a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.5a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.5b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.6a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.12.9 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.10 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.11 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.5b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.3.9 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.4.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.5.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.5.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.10 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.4a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.4s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.6.9 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.7.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.8.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.8.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.8.1s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.1s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.2s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.3s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 16.9.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.1.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.1.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.1.1s when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.1.1t when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.1.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.1.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.10.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.10.1b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.11.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.11.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1x when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1y when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.1z6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.2a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.4a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.4b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.5b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.5c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.5d when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.6a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.6b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.7a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.12.7b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.13.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.14.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1w when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1x when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1y when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.1z when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.2a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.2b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.2c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.3b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.4c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.4d when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.4s1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.15.5a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.16.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.16.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.17.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.0EFT when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.1w when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.1x when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.1y when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.18.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.2.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.2.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.2.1r when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.2.1v when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.2.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.2.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.1w when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.1x when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.1z when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.2a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.4a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.4b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.4c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.5a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.5b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.3.8a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.4.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.4.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.4.1b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.4.1c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.4.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.4.2a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.5.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.5.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.5.1b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.5.1c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1w when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1x when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1y when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1z when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.1z1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.5a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.6a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.6.8a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.7.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.7.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.7.1b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.7.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.8.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1w when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1x when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1x1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1y when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.1y1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.2 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.2a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.3 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.3a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.4 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.4a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5c when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5d when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5e when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.5f when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.6 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.6a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.6b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.7 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.7a when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.7b when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.8 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 17.9.9 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 26.1.1 when installed on Cisco Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software Release 26.1.1a when installed on Cisco Adaptive Security Appliance (ASA) Software","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":0.00653,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2023-09-27T16:00:00Z","updated_at":"2023-09-27T16:00:00Z","advisory_updated_at":"2023-09-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r"},"row_display_order":2},{"product":{"name":"Cisco IOS XE Catalyst SD-WAN","slug":"cisco-ios-xe-catalyst-sd-wan","vendor":"Cisco"},"cve":{"id":"CVE-2023-20033"},"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":"2026-07-20T02:52:06Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"16.12.3; 16.12.4; 16.12.4a; 16.12.5; 16.9.1; 16.9.2; 16.9.3; 16.9.4; 17.6.4","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":0.00653,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2023-09-27T16:00:00Z","updated_at":"2023-09-27T16:00:00Z","advisory_updated_at":"2023-09-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat3k-dos-ZZA4Gb3r"},"row_display_order":3}]}