{"id":"CVE-2001-0864","url":"https://www.cyber-defence.io/tools/cve/CVE-2001-0864","generatedAt":"2026-10-27T20:40:23.061Z","title":"Cisco 12000 with IOS 12.0 and line cards based on Engine 2 does not properly handle the implicit \"deny ip any any\" rule in an outgoing ACL when the ACL contains exactly 448 entries, which can allow some outgoing packets to bypass access restrictions.","description":"Cisco 12000 with IOS 12.0 and line cards based on Engine 2 does not properly handle the implicit \"deny ip any any\" rule in an outgoing ACL when the ACL contains exactly 448 entries, which can allow some outgoing packets to bypass access restrictions.","published":"2001-12-06T05:00:00.000Z","lastModified":"2026-06-16T21:55:08.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["cisco/12000 router"],"epss":{"score":0.01392,"percentile":0.72163,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.ciac.org/ciac/bulletins/m-018.shtml","source":"cve@mitre.org"},{"url":"http://www.cisco.com/warp/public/707/GSR-ACL-pub.shtml","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.osvdb.org/1986","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/3536","source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/7553","source":"cve@mitre.org"},{"url":"http://www.ciac.org/ciac/bulletins/m-018.shtml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cisco.com/warp/public/707/GSR-ACL-pub.shtml","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/1986","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/3536","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/7553","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2001-0864","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}