{"id":"CVE-2012-0339","aliases":["EUVD-2012-0375","GHSA-48mq-ghr6-3cc9"],"status":"published","title":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement...","description":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01022,"percentile":0.63708,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2012-05-02T10:00:00Z","modified":"2026-06-16T23:37:08Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://www.securitytracker.com/id?1027005","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/release/notes/caveats_SXF_rebuilds.html","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-0339"},{"url":"https://github.com/advisories/GHSA-48mq-ghr6-3cc9"}],"sources":{"cve":[{"id":"CVE-2012-0339","description":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.","status":"published","published":"2012-05-02T10:00:00Z","modified":"2024-08-06T18:23:30.556Z","updated_at":"2026-11-02T14:34:52.638543Z"}],"euvd":[{"id":"EUVD-2012-0375","description":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.","status":"published","published":"2012-05-02T10:00:00Z","modified":"2024-08-06T18:23:30Z","updated_at":"2026-11-03T01:56:21.720277Z"}],"ghsa":[{"id":"GHSA-48mq-ghr6-3cc9","title":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement...","description":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.","status":"published","published":"2022-05-04T00:29:33Z","modified":"2023-02-01T05:01:41Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:45.784088Z"}],"nvd":[{"id":"CVE-2012-0339","description":"Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.","status":"published","published":"2012-05-02T10:09:22.177Z","modified":"2026-06-16T23:37:08.29Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:13.901526Z"}]}}