CVE-2013-1121

Severity: medium (CVSS 5.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-09-19 · updated 2026-06-16
Weakness: CWE-399

Description

The regex engine in the BGP implementation in Cisco NX-OS, when a complex regular expression is configured for inbound routes, allows remote attackers to cause a denial of service (device reload) via a crafted AS path set, aka Bug ID CSCuf49554.

Affected products

Cisco NX-OS: all versions

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1121
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1121

Get alerted when CVE-2013-1121 or the next vulnerability affects your stack