CVE-2012-4097: Cisco NX-OS

Medium severity, CVSS 4.3. EPSS: 1.5% chance of exploitation in the next 30 days.

The BGP implementation in Cisco NX-OS does not properly filter segment types in AS paths, which allows remote attackers to cause a denial of service (BGP service reset) via a malformed UPDATE message, aka Bug ID CSCtn13043.

Affected products

• Cisco NX-OS: affected versions not specified

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