{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20222","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","state":"PUBLISHED","assignerShortName":"cisco","dateReserved":"2025-10-08T11:59:15.398Z","datePublished":"2026-09-16T20:12:18.963Z","dateUpdated":"2026-09-18T19:08:55.420Z"},"containers":{"cna":{"title":"Cisco Secure Adaptive Security Appliance Software and Secure Firewall Threat Defense Software EIGRP Denial of Service Vulnerability","metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"descriptions":[{"lang":"en","value":"A vulnerability in the EIGRP implementation in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper resource management when handling EIGRP update messages. An attacker could exploit this vulnerability by sending crafted EIGRP updates at a high rate to an affected device. A successful exploit could allow the attacker to trigger a memory leak that will eventually cause the affected device to reload unexpectedly."}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-eigrp-dos-GOhNejSj","name":"cisco-sa-asaftd-eigrp-dos-GOhNejSj"}],"exploits":[{"lang":"en","value":"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"source":{"advisory":"cisco-sa-asaftd-eigrp-dos-GOhNejSj","discovery":"INTERNAL","defects":["CSCwo05022"]},"problemTypes":[{"descriptions":[{"lang":"en","description":"Missing Release of Memory after Effective Lifetime","type":"cwe","cweId":"CWE-401"}]}],"affected":[{"vendor":"Cisco","product":"Cisco Secure Firewall Adaptive Security Appliance (ASA) Software","versions":[{"version":"9.19.1","status":"affected"},{"version":"9.19.1.5","status":"affected"},{"version":"9.19.1.9","status":"affected"},{"version":"9.19.1.12","status":"affected"},{"version":"9.19.1.18","status":"affected"},{"version":"9.20.1","status":"affected"},{"version":"9.19.1.22","status":"affected"},{"version":"9.20.1.5","status":"affected"},{"version":"9.19.1.24","status":"affected"},{"version":"9.20.2","status":"affected"},{"version":"9.19.1.27","status":"affected"},{"version":"9.20.2.10","status":"affected"},{"version":"9.19.1.28","status":"affected"},{"version":"9.20.2.21","status":"affected"},{"version":"9.19.1.31","status":"affected"},{"version":"9.20.2.22","status":"affected"},{"version":"9.20.3","status":"affected"},{"version":"9.23.1","status":"affected"},{"version":"9.22.1.1","status":"affected"},{"version":"9.20.3.4","status":"affected"},{"version":"9.20.3.7","status":"affected"},{"version":"9.19.1.37","status":"affected"},{"version":"9.20.3.9","status":"affected"},{"version":"9.19.1.38","status":"affected"},{"version":"9.22.1.3","status":"affected"},{"version":"9.20.3.10","status":"affected"},{"version":"9.22.1.2","status":"affected"},{"version":"9.20.3.13","status":"affected"},{"version":"9.22.1.6","status":"affected"},{"version":"9.22.2","status":"affected"},{"version":"9.20.3.16","status":"affected"},{"version":"9.19.1.42","status":"affected"},{"version":"9.23.1.3","status":"affected"},{"version":"9.20.3.20","status":"affected"},{"version":"9.22.2.4","status":"affected"},{"version":"9.23.1.7","status":"affected"},{"version":"9.20.4","status":"affected"},{"version":"9.22.2.9","status":"affected"},{"version":"9.23.1.13","status":"affected"},{"version":"9.20.4.7","status":"affected"},{"version":"9.22.2.13","status":"affected"},{"version":"9.20.4.10","status":"affected"},{"version":"9.23.1.19","status":"affected"},{"version":"9.22.2.14","status":"affected"},{"version":"9.24.1","status":"affected"},{"version":"9.23.1.22","status":"affected"},{"version":"9.20.4.14","status":"affected"},{"version":"9.22.2.20","status":"affected"},{"version":"9.20.4.19","status":"affected"},{"version":"9.23.1.26","status":"affected"},{"version":"9.22.2.32","status":"affected"},{"version":"9.22.3","status":"affected"},{"version":"9.24.1.5","status":"affected"},{"version":"9.20.4.22","status":"affected"},{"version":"9.24.1.9","status":"affected"},{"version":"9.20.4.28","status":"affected"},{"version":"9.22.3.5","status":"affected"},{"version":"9.23.1.195","status":"affected"},{"version":"9.20.4.30","status":"affected"},{"version":"9.24.1.155","status":"affected"},{"version":"9.23.1.32","status":"affected"},{"version":"9.24.1.11","status":"affected"},{"version":"9.20.4.34","status":"affected"},{"version":"9.20.4.235","status":"affected"}],"defaultStatus":"unknown"},{"vendor":"Cisco","product":"Cisco Secure Firewall Threat Defense (FTD) Software","versions":[{"version":"7.3.0","status":"affected"},{"version":"7.3.1","status":"affected"},{"version":"7.3.1.1","status":"affected"},{"version":"7.4.0","status":"affected"},{"version":"7.4.1","status":"affected"},{"version":"7.4.1.1","status":"affected"},{"version":"7.3.1.2","status":"affected"},{"version":"7.6.0","status":"affected"},{"version":"7.4.2","status":"affected"},{"version":"7.4.2.1","status":"affected"},{"version":"7.7.0","status":"affected"},{"version":"7.4.2.2","status":"affected"},{"version":"7.6.1","status":"affected"},{"version":"7.4.2.3","status":"affected"},{"version":"7.6.2","status":"affected"},{"version":"7.7.10","status":"affected"},{"version":"7.7.11","status":"affected"},{"version":"7.6.2.1","status":"affected"},{"version":"7.7.10.1","status":"affected"},{"version":"7.4.2.4","status":"affected"},{"version":"7.4.3","status":"affected"},{"version":"7.6.4","status":"affected"},{"version":"10.0.0","status":"affected"},{"version":"7.4.4","status":"affected"},{"version":"7.4.7","status":"affected"}],"defaultStatus":"unknown"}],"providerMetadata":{"orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","shortName":"cisco","dateUpdated":"2026-09-18T19:08:55.420Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T14:52:36.394409Z","id":"CVE-2026-20222","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-17T14:52:51.759Z"}}]}}