{"id":"CVE-2011-2058","aliases":["EUVD-2011-2052","GHSA-jrqh-4whq-6cjg"],"status":"published","title":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an...","description":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an external loop between a pair of dot1x enabled ports, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many unicast EAPoL Protocol Data Units (PDUs), aka Bug ID CSCtq36336.","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":0.01817,"percentile":0.78844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2011-10-22T01:00:00Z","modified":"2026-06-16T23:30:38Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/release/notes/caveats_SXI_rebuilds.html","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2058"},{"url":"https://github.com/advisories/GHSA-jrqh-4whq-6cjg"}],"sources":{"cve":[{"id":"CVE-2011-2058","description":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an external loop between a pair of dot1x enabled ports, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many unicast EAPoL Protocol Data Units (PDUs), aka Bug ID CSCtq36336.","status":"published","published":"2011-10-22T01:00:00Z","modified":"2024-09-17T02:58:00.505Z","updated_at":"2026-11-02T14:35:36.603688Z"}],"euvd":[{"id":"EUVD-2011-2052","description":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an external loop between a pair of dot1x enabled ports, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many unicast EAPoL Protocol Data Units (PDUs), aka Bug ID CSCtq36336.","status":"published","published":"2011-10-22T01:00:00Z","modified":"2024-09-17T02:58:00Z","updated_at":"2026-11-03T00:28:35.481673Z"}],"ghsa":[{"id":"GHSA-jrqh-4whq-6cjg","title":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an...","description":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an external loop between a pair of dot1x enabled ports, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many unicast EAPoL Protocol Data Units (PDUs), aka Bug ID CSCtq36336.","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-20"],"updated_at":"2026-11-02T14:50:33.423478Z"}],"nvd":[{"id":"CVE-2011-2058","description":"The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle an external loop between a pair of dot1x enabled ports, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many unicast EAPoL Protocol Data Units (PDUs), aka Bug ID CSCtq36336.","status":"published","published":"2011-10-22T02:59:19.183Z","modified":"2026-06-16T23:30:38.15Z","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-20"],"updated_at":"2026-11-02T14:02:10.769216Z"}]}}