{"id":"CVE-2013-5476","aliases":["EUVD-2013-5316","GHSA-7w76-v7jx-gcpv"],"status":"published","title":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or...","description":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.","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":"2026-11-08","score":0.01887,"percentile":0.79669,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"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-cce","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5476"},{"url":"https://github.com/advisories/GHSA-7w76-v7jx-gcpv"}],"sources":{"cve":[{"id":"CVE-2013-5476","description":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.","status":"published","published":"2013-09-27T10:00:00Z","modified":"2024-09-16T18:03:49.348Z","updated_at":"2026-11-02T14:34:55.508771Z"}],"euvd":[{"id":"EUVD-2013-5316","description":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.","status":"published","published":"2013-09-27T10:00:00Z","modified":"2024-09-16T18:03:49Z","updated_at":"2026-11-03T00:55:35.786755Z"}],"ghsa":[{"id":"GHSA-7w76-v7jx-gcpv","title":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or...","description":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.","status":"published","published":"2022-05-17T05:03:05Z","modified":"2023-01-28T05:03:00Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:53.587553Z"}],"nvd":[{"id":"CVE-2013-5476","description":"The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.","status":"published","published":"2013-09-27T10:08:04.257Z","modified":"2026-06-16T23:58:52.92Z","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-20"],"updated_at":"2026-11-02T14:02:38.715467Z"}]}}