{"id":"CVE-2005-4436","aliases":["EUVD-2005-4431","GHSA-4h7j-8cv2-jpwj"],"status":"published","title":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2)...","description":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a \"spoofed neighbor announcement\" with (1) mismatched k values or (2) \"goodbye message\" Type-Length-Value (TLV).","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02097,"percentile":0.81796,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2005-12-21T01:00:00Z","modified":"2026-06-16T22:18:47Z","references":[{"url":"http://www.securityfocus.com/bid/15978","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2005/3008","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/419898/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040330.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Vendor Advisory"]},{"url":"http://marc.info/?l=full-disclosure\u0026m=113504451523186\u0026w=2","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5454","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://securitytracker.com/id?1015382","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2005-4436"},{"url":"https://github.com/advisories/GHSA-4h7j-8cv2-jpwj"}],"sources":{"cve":[{"id":"CVE-2005-4436","description":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a \"spoofed neighbor announcement\" with (1) mismatched k values or (2) \"goodbye message\" Type-Length-Value (TLV).","status":"published","published":"2005-12-21T01:00:00Z","modified":"2024-08-07T23:46:05.108Z","updated_at":"2026-11-02T14:33:39.259087Z"}],"euvd":[{"id":"EUVD-2005-4431","description":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a \"spoofed neighbor announcement\" with (1) mismatched k values or (2) \"goodbye message\" Type-Length-Value (TLV).","status":"published","published":"2005-12-21T01:00:00Z","modified":"2024-08-07T23:46:05Z","updated_at":"2026-11-03T01:15:22.811795Z"}],"ghsa":[{"id":"GHSA-4h7j-8cv2-jpwj","title":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2)...","description":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a \"spoofed neighbor announcement\" with (1) mismatched k values or (2) \"goodbye message\" Type-Length-Value (TLV).","status":"published","published":"2022-05-01T02:27:14Z","modified":"2023-01-30T05:08:02Z","updated_at":"2026-11-02T14:47:47.270322Z"}],"nvd":[{"id":"CVE-2005-4436","description":"Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a \"spoofed neighbor announcement\" with (1) mismatched k values or (2) \"goodbye message\" Type-Length-Value (TLV).","status":"published","published":"2005-12-21T01:03:00Z","modified":"2026-06-16T22:18:47.61Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:58.826417Z"}]}}