CVE-2013-6979 json
The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network config…
published 2013-12-23 12 y ago modified 2026-06-17 4 mo ago also EUVD-2013-6780
- cvss
- 5.4
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.6%
- EPSS 3.6% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
3.60% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.4 | AV:N/AC:H/Au:N/C:C/I:N/A:N |
Classification
- Weakness
-
- CWE-287 Improper Authentication
- Technology feeds
References
-
tools.cisco.com
/security/center/content/CiscoSecurityNotice/CVE-2013-6979
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/89901
vdb-entry
-
securitytracker.com
/id/1029537
vdb-entry, third-party-advisory
-
osvdb.org
/101351
vdb-entry
-
securityfocus.com
/bid/64502
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2013-6979
- NVD CVE-2013-6979
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.