VULNERABILITY INTELLIGENCE

CVE-2013-6979

CVSS score5.4 MEDIUM
EPSS probability3.60%
CISA KEVNot currently listed
Published2013-12-23
Last modified2026-06-17
CVSS vectorAV:N/AC:H/Au:N/C:C/I:N/A:N

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.

Weakness classification

  • CWE-287: Improper Authentication

Primary references