{"id":"CVE-2012-4099","aliases":["EUVD-2012-4043","GHSA-6jv7-88jc-m94f"],"status":"published","title":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote...","description":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01606,"percentile":0.76054,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-10-14T01:00:00Z","modified":"2026-06-16T23:44:25Z","products":[{"vendor":"cisco","product":"nx-os"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4099","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://osvdb.org/98130","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-4099"},{"url":"https://github.com/advisories/GHSA-6jv7-88jc-m94f"}],"sources":{"cve":[{"id":"CVE-2012-4099","description":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.","status":"published","published":"2013-10-14T01:00:00Z","modified":"2024-09-17T00:26:56.638Z","updated_at":"2026-11-02T14:34:51.584538Z"}],"euvd":[{"id":"EUVD-2012-4043","description":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.","status":"published","published":"2013-10-14T01:00:00Z","modified":"2024-09-17T00:26:56Z","updated_at":"2026-11-03T00:28:58.853192Z"}],"ghsa":[{"id":"GHSA-6jv7-88jc-m94f","title":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote...","description":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.","status":"published","published":"2022-05-17T03:48:44Z","modified":"2023-01-27T05:08:19Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:16.659055Z"}],"nvd":[{"id":"CVE-2012-4099","description":"The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.","status":"published","published":"2013-10-14T03:34:55.01Z","modified":"2026-06-16T23:44:25.25Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:17.375282Z"}]}}