{"id":"CVE-2009-2056","aliases":["EUVD-2009-2052","GHSA-mc68-3chj-wmp4"],"status":"published","title":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service ...","description":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.","severity":{"version":"2.0","score":3.3,"vector":"AV:N/AC:L/Au:M/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01336,"percentile":0.71424,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2009-08-21T17:00:00Z","modified":"2026-06-16T23:08:40Z","products":[{"vendor":"cisco","product":"ios_xr"}],"references":[{"url":"http://securitytracker.com/id?1022756","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-2056"},{"url":"https://github.com/advisories/GHSA-mc68-3chj-wmp4"}],"sources":{"cve":[{"id":"CVE-2009-2056","description":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.","status":"published","published":"2009-08-21T17:00:00Z","modified":"2024-09-17T03:37:38.827Z","updated_at":"2026-11-02T14:33:23.395558Z"}],"euvd":[{"id":"EUVD-2009-2052","description":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.","status":"published","published":"2009-08-21T17:00:00Z","modified":"2024-09-17T03:37:38Z","updated_at":"2026-11-03T00:28:30.275492Z"}],"ghsa":[{"id":"GHSA-mc68-3chj-wmp4","title":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service ...","description":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.","status":"published","published":"2022-05-02T03:31:15Z","modified":"2023-01-31T05:08:09Z","updated_at":"2026-11-02T14:49:20.892642Z"}],"nvd":[{"id":"CVE-2009-2056","description":"Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.","status":"published","published":"2009-08-21T17:30:00.297Z","modified":"2026-06-16T23:08:40.357Z","cvss":[{"version":"2.0","score":3.3,"vector":"AV:N/AC:L/Au:M/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:01:36.596719Z"}]}}