{"id":"CVE-2011-1640","aliases":["EUVD-2011-1640","GHSA-cg39-wq74-79hj"],"status":"published","title":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a...","description":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01768,"percentile":0.7825,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2011-10-22T01:00:00Z","modified":"2026-06-16T23:29:44Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/release/notes/caveats_SXJ.html","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1640"},{"url":"https://github.com/advisories/GHSA-cg39-wq74-79hj"}],"sources":{"cve":[{"id":"CVE-2011-1640","description":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.","status":"published","published":"2011-10-22T01:00:00Z","modified":"2024-09-16T23:05:53.542Z","updated_at":"2026-11-02T14:35:38.711857Z"}],"euvd":[{"id":"EUVD-2011-1640","description":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.","status":"published","published":"2011-10-22T01:00:00Z","modified":"2024-09-16T23:05:53Z","updated_at":"2026-11-03T00:54:56.752396Z"}],"ghsa":[{"id":"GHSA-cg39-wq74-79hj","title":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a...","description":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.","status":"published","published":"2022-05-13T01:24:30Z","modified":"2023-02-01T05:07:31Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:50:33.423478Z"}],"nvd":[{"id":"CVE-2011-1640","description":"The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.","status":"published","published":"2011-10-22T02:59:19.073Z","modified":"2026-06-16T23:29:44.363Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"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-400"],"updated_at":"2026-11-02T14:02:10.769216Z"}]}}