CVE-2013-6683: Cisco NX-OS

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.

Affected products

• Cisco NX-OS: affected versions not specified

Published 2013-11-13. Last modified 2026-06-17.