{"schema":"threatline.record/2","record":{"id":"CVE-2024-20353","aliases":[],"summary":"Cisco ASA and FTD Denial of Service Vulnerability","details":"Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability that can lead to remote denial of service condition.","categories":["Network & edge"],"product":"Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)","vendor":"Cisco","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2024-20353","source_modified_at":"2025-10-21T23:05:20.706Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Cisco Adaptive Security Appliance (ASA) Software","vendor":"Cisco","versions":[{"version":"9.8.1","status":"affected"},{"version":"9.8.1.5","status":"affected"},{"version":"9.8.1.7","status":"affected"},{"version":"9.8.2","status":"affected"},{"version":"9.8.2.8","status":"affected"},{"version":"9.8.2.14","status":"affected"},{"version":"9.8.2.15","status":"affected"},{"version":"9.8.2.17","status":"affected"},{"version":"9.8.2.20","status":"affected"},{"version":"9.8.2.24","status":"affected"},{"version":"9.8.2.26","status":"affected"},{"version":"9.8.2.28","status":"affected"},{"version":"9.8.2.33","status":"affected"},{"version":"9.8.2.35","status":"affected"},{"version":"9.8.2.38","status":"affected"},{"version":"9.8.3.8","status":"affected"},{"version":"9.8.3.11","status":"affected"},{"version":"9.8.3.14","status":"affected"},{"version":"9.8.3.16","status":"affected"},{"version":"9.8.3.18","status":"affected"},{"version":"9.8.3.21","status":"affected"},{"version":"9.8.3","status":"affected"},{"version":"9.8.3.26","status":"affected"},{"version":"9.8.3.29","status":"affected"},{"version":"9.8.4","status":"affected"},{"version":"9.8.4.3","status":"affected"},{"version":"9.8.4.7","status":"affected"},{"version":"9.8.4.8","status":"affected"},{"version":"9.8.4.10","status":"affected"},{"version":"9.8.4.12","status":"affected"}],"defaultStatus":null},{"source":"CVE 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Software","vendor":"Cisco","versions":[{"version":"6.2.3","status":"affected"},{"version":"6.2.3.1","status":"affected"},{"version":"6.2.3.2","status":"affected"},{"version":"6.2.3.3","status":"affected"},{"version":"6.2.3.4","status":"affected"},{"version":"6.2.3.5","status":"affected"},{"version":"6.2.3.6","status":"affected"},{"version":"6.2.3.7","status":"affected"},{"version":"6.2.3.8","status":"affected"},{"version":"6.2.3.10","status":"affected"},{"version":"6.2.3.11","status":"affected"},{"version":"6.2.3.9","status":"affected"},{"version":"6.2.3.12","status":"affected"},{"version":"6.2.3.13","status":"affected"},{"version":"6.2.3.14","status":"affected"},{"version":"6.2.3.15","status":"affected"},{"version":"6.2.3.16","status":"affected"},{"version":"6.2.3.17","status":"affected"},{"version":"6.2.3.18","status":"affected"},{"version":"6.6.0","status":"affected"},{"version":"6.6.0.1","status":"affected"},{"version":"6.6.1","status":"affected"},{"version":"6.6.3","status":"affected"},{"version":"6.6.4","status":"affected"},{"version":"6.6.5","status":"affected"},{"version":"6.6.5.1","status":"affected"},{"version":"6.6.5.2","status":"affected"},{"version":"6.6.7","status":"affected"},{"version":"6.6.7.1","status":"affected"},{"version":"6.4.0","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":true,"date_added":"2024-04-24","due_date":"2024-05-01","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.70686,"percentile":0.99397,"score_date":"2026-10-23"},"published_at":"2024-04-24T18:15:57.646Z","modified_at":"2025-10-21T23:05:20.706Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2024-20353","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:05:20.706Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2024-20353","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-20353","source":"CISA KEV"},{"source":"CVE List","url":"https://blog.talosintelligence.com/arcanedoor-new-espionage-focused-campaign-found-targeting-perimeter-network-devices/","tags":["exploit"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-20353","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"partial","assessed_at":"2024-04-29T20:02:41.285934Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:05:20.706Z","content_hash":"f6343ae6e8282c7da07132b37c16bc2fb32a44cacd81b930e4fc1439fe84ec4d"}}