{"id":"CVE-2009-4921","aliases":["EUVD-2009-4884","GHSA-3qqh-3r54-2rh5"],"status":"published","title":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow...","description":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.","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":"2026-11-09","score":0.01205,"percentile":0.68521,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2010-06-29T18:00:00Z","modified":"2026-06-16T23:14:36Z","products":[{"vendor":"cisco","product":"asa_5580"}],"references":[{"url":"http://www.cisco.com/en/US/docs/security/asa/asa81/release/notes/asarn812.html","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4921"},{"url":"https://github.com/advisories/GHSA-3qqh-3r54-2rh5"}],"sources":{"cve":[{"id":"CVE-2009-4921","description":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.","status":"published","published":"2010-06-29T18:00:00Z","modified":"2024-09-17T03:28:44.654Z","updated_at":"2026-11-02T14:33:24.782697Z"}],"euvd":[{"id":"EUVD-2009-4884","description":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.","status":"published","published":"2010-06-29T18:00:00Z","modified":"2024-09-17T03:28:44Z","updated_at":"2026-11-03T00:28:31.175316Z"}],"ghsa":[{"id":"GHSA-3qqh-3r54-2rh5","title":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow...","description":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.","status":"published","published":"2022-05-02T03:59:34Z","modified":"2023-01-31T05:09:40Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:31.756278Z"}],"nvd":[{"id":"CVE-2009-4921","description":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.","status":"published","published":"2010-06-29T18:30:01.74Z","modified":"2026-06-16T23:14:36.46Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:38.684719Z"}]}}