CVE-2008-1156: Cisco IOS

Medium severity, CVSS 5.1. EPSS: 2.7% chance of exploitation in the next 30 days.

Unspecified vulnerability in the Multicast Virtual Private Network (MVPN) implementation in Cisco IOS 12.0, 12.2, 12.3, and 12.4 allows remote attackers to create "extra multicast states on the core routers" via a crafted Multicast Distribution Tree (MDT) Data Join message.

Affected products

• Cisco Cisco IOS: version 12.3 only; version 12.4 only
• Cisco IOS: version 12.0 only; version 12.2 only

Published 2008-03-27. Last modified 2026-06-16.