CVE-2012-4099: Cisco NX-OS

Medium severity, CVSS 4.3. EPSS: 1.6% chance of exploitation in the next 30 days.

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: affected versions not specified

Published 2013-10-14. Last modified 2026-06-16.