{"id":"CVE-2013-6979","aliases":["EUVD-2013-6780","GHSA-rvr7-79c9-w4jr"],"status":"published","title":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly...","description":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.","severity":{"version":"2.0","score":5.4,"vector":"AV:N/AC:H/Au:N/C:C/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.03602,"percentile":0.89543,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2013-12-23T22:00:00Z","modified":"2026-06-17T00:01:13Z","products":[{"vendor":"cisco","product":"ios_xe"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/89901","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securitytracker.com/id/1029537","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://osvdb.org/101351","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/64502","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6979","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-6979"},{"url":"https://github.com/advisories/GHSA-rvr7-79c9-w4jr"}],"sources":{"cve":[{"id":"CVE-2013-6979","description":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.","status":"published","published":"2013-12-23T22:00:00Z","modified":"2024-08-06T17:53:45.809Z","updated_at":"2026-11-02T14:34:57.499208Z"}],"euvd":[{"id":"EUVD-2013-6780","description":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.","status":"published","published":"2013-12-23T22:00:00Z","modified":"2024-08-06T17:53:45Z","updated_at":"2026-11-03T01:56:24.812586Z"}],"ghsa":[{"id":"GHSA-rvr7-79c9-w4jr","title":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly...","description":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.","status":"published","published":"2022-05-17T01:30:04Z","modified":"2023-02-03T05:04:08Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:53:29.869331Z"}],"nvd":[{"id":"CVE-2013-6979","description":"The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.","status":"published","published":"2013-12-23T22:55:03.177Z","modified":"2026-06-17T00:01:13.813Z","cvss":[{"version":"2.0","score":5.4,"vector":"AV:N/AC:H/Au:N/C:C/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:02:44.596064Z"}]}}