CVE-2013-6693: Cisco 7600 Router

Medium severity, CVSS 5.4. EPSS: 1.1% chance of exploitation in the next 30 days.

The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs are configured, allows remote attackers to cause a denial of service (chunk corruption and device reload) by establishing many multicast flows, aka Bug ID CSCue22345.

Affected products

• Cisco 7600 Router
• Cisco IOS: up to and including 15.3\(3\)s; version 15.3(2)s only; version 15.3s only

Published 2013-11-22. Last modified 2026-06-17.