{"id":"CVE-2013-5474","aliases":["EUVD-2013-5314","GHSA-pj68-37fj-g5m7"],"status":"published","title":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12...","description":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.3 allows remote attackers to cause a denial of service (device reload or hang) via fragmented IPv6 packets, aka Bug ID CSCud64812.","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":"2026-11-07","score":0.01444,"percentile":0.73423,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362"],"published":"2013-09-27T10:00:00Z","modified":"2026-06-16T23:58:52Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-ipv6vfr","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5474"},{"url":"https://github.com/advisories/GHSA-pj68-37fj-g5m7"}],"sources":{"cve":[{"id":"CVE-2013-5474","description":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.3 allows remote attackers to cause a denial of service (device reload or hang) via fragmented IPv6 packets, aka Bug ID CSCud64812.","status":"published","published":"2013-09-27T10:00:00Z","modified":"2024-09-16T20:17:31.462Z","updated_at":"2026-11-02T14:34:55.825574Z"}],"euvd":[{"id":"EUVD-2013-5314","description":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.3 allows remote attackers to cause a denial of service (device reload or hang) via fragmented IPv6 packets, aka Bug ID CSCud64812.","status":"published","published":"2013-09-27T10:00:00Z","modified":"2024-09-16T20:17:31Z","updated_at":"2026-11-03T00:55:15.039746Z"}],"ghsa":[{"id":"GHSA-pj68-37fj-g5m7","title":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12...","description":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.3 allows remote attackers to cause a denial of service (device reload or hang) via fragmented IPv6 packets, aka Bug ID CSCud64812.","status":"published","published":"2022-05-17T05:03:06Z","modified":"2023-01-28T05:03:18Z","cwes":["CWE-362"],"updated_at":"2026-11-02T14:43:57.015581Z"}],"nvd":[{"id":"CVE-2013-5474","description":"Race condition in the IPv6 virtual fragmentation reassembly (VFR) implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.3 allows remote attackers to cause a denial of service (device reload or hang) via fragmented IPv6 packets, aka Bug ID CSCud64812.","status":"published","published":"2013-09-27T10:08:04.227Z","modified":"2026-06-16T23:58:52.717Z","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-362"],"updated_at":"2026-11-02T14:02:38.715467Z"}]}}