{"id":"CVE-2011-4231","aliases":["EUVD-2011-4173","GHSA-33f8-vpx6-6229"],"status":"published","title":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates...","description":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.","severity":{"version":"2.0","score":6.3,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00587,"percentile":0.48306,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2012-05-03T10:00:00Z","modified":"2026-06-16T23:34:36Z","products":[{"vendor":"cisco","product":"ios"},{"vendor":"cisco","product":"ios_xe"}],"references":[{"url":"http://www.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_34s.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4231"},{"url":"https://github.com/advisories/GHSA-33f8-vpx6-6229"}],"sources":{"cve":[{"id":"CVE-2011-4231","description":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.","status":"published","published":"2012-05-03T10:00:00Z","modified":"2024-09-16T20:07:13.421Z","updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4173","description":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.","status":"published","published":"2012-05-03T10:00:00Z","modified":"2024-09-16T20:07:13Z","updated_at":"2026-11-03T00:55:16.813871Z"}],"ghsa":[{"id":"GHSA-33f8-vpx6-6229","title":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates...","description":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.","status":"published","published":"2022-05-17T05:30:37Z","modified":"2023-01-28T05:03:56Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:44:04.493027Z"}],"nvd":[{"id":"CVE-2011-4231","description":"Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.","status":"published","published":"2012-05-03T10:11:39.687Z","modified":"2026-06-16T23:34:36.397Z","cvss":[{"version":"2.0","score":6.3,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:12.272092Z"}]}}