CVE-2012-4099

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-10-14 · updated 2026-06-16
Weakness: CWE-20

Description

The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.

Affected products

Cisco NX-OS: all versions

References

http://osvdb.org/98130
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4099
http://osvdb.org/98130
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4099

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