{"id":"CVE-1999-1466","title":"Vulnerability in Cisco routers versions 8.2 through 9.1 allows remote attackers to bypass access control lists when extended IP access lists are used on certain interfaces, the IP route cache is enabled, and the access list uses the \"est…","summary":"Vulnerability in Cisco routers versions 8.2 through 9.1 allows remote attackers to bypass access control lists when extended IP access lists are used on certain interfaces, the IP route cache is enabled, and the access list uses the \"est…","severity":"high","cvss":7.5,"cvssVector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","published":"1992-12-10","updated":"2026-06-16","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-1999-1466","references":[{"url":"http://www.cert.org/advisories/CA-1992-20.html","label":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/53","label":"cve@mitre.org"},{"url":"http://www.cert.org/advisories/CA-1992-20.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/53","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.02319,"epssPercentile":0.82699,"ingestedAt":"2026-06-19T03:39:00.710Z","slug":"CVE-1999-1466","body":"## Overview\n\nVulnerability in Cisco routers versions 8.2 through 9.1 allows remote attackers to bypass access control lists when extended IP access lists are used on certain interfaces, the IP route cache is enabled, and the access list uses the \"established\" keyword.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.5,"exploitation":0,"ransomware":0},"changes":[]}