CVE-2012-0382: Cisco IOS

High severity, CVSS 7.5. EPSS: 3.8% chance of exploitation in the next 30 days.

The Multicast Source Discovery Protocol (MSDP) implementation in Cisco IOS 12.0, 12.2 through 12.4, and 15.0 through 15.2 and IOS XE 2.1.x through 2.6.x and 3.1.xS through 3.4.xS before 3.4.1S and 3.1.xSG and 3.2.xSG before 3.2.2SG allows remote attackers to cause a denial of service (device reload) via encapsulated IGMP data in an MSDP packet, aka Bug ID CSCtr28857.

Affected products

• Cisco IOS: version 12.0 only; version 12.2 only; version 12.2(1) only; version 12.2(1)dx only; version 12.2(1)s only; version 12.2(1)t only; …
• Cisco IOS XE: from 2.1.0, up to and including 2.6.2; from 3.1.0s, before 3.4.1s (fixed in 3.4.1s); from 3.1.0sg, before 3.2.2sg (fixed in 3.2.2sg)

Published 2012-03-29. Last modified 2026-06-16.