CVE-2011-3272: Cisco IOS

High severity, CVSS 7.8. EPSS: 2.6% chance of exploitation in the next 30 days.

The IP Service Level Agreement (IP SLA) functionality in Cisco IOS 15.1, and IOS XE 2.1.x through 3.3.x, allows remote attackers to cause a denial of service (memory corruption and device reload) via malformed IP SLA packets, aka Bug ID CSCtk67073.

Affected products

• Cisco IOS: version 15.1 only
• Cisco IOS XE: version 2.1.0 only; version 2.1.1 only; version 2.1.2 only; version 2.2.1 only; version 2.2.2 only; version 2.2.3 only; …

Published 2011-10-03. Last modified 2026-06-16.