{"id":"CVE-1999-1464","aliases":["EUVD-1999-1445","GHSA-jgwm-wr7r-95q6"],"status":"published","title":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows...","description":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01626,"percentile":0.76314,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-12-31T05:00:00Z","modified":"2026-06-16T21:50:29Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://ciac.llnl.gov/ciac/bulletins/j-016.shtml","tags":["third-party-advisory","government-resource","x_refsource_CIAC","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.cisco.com/warp/public/770/iosdfsacl-pub.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/1401","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-1464"},{"url":"https://github.com/advisories/GHSA-jgwm-wr7r-95q6"}],"sources":{"cve":[{"id":"CVE-1999-1464","description":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:18:07.449Z","updated_at":"2026-11-02T14:33:53.295018Z"}],"euvd":[{"id":"EUVD-1999-1445","description":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:18:07Z","updated_at":"2026-11-03T03:50:42.451061Z"}],"ghsa":[{"id":"GHSA-jgwm-wr7r-95q6","title":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows...","description":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.","status":"published","published":"2022-04-30T18:12:31Z","modified":"2023-01-30T05:04:37Z","updated_at":"2026-11-02T14:47:05.478485Z"}],"nvd":[{"id":"CVE-1999-1464","description":"Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.","status":"published","published":"1999-12-31T05:00:00Z","modified":"2026-06-16T21:50:29.78Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T13:58:51.654586Z"}]}}