CVE-2011-3295: Cisco IOS XR

High severity, CVSS 7.8. EPSS: 1.8% chance of exploitation in the next 30 days.

The NETIO and IPV4_IO processes in Cisco IOS XR 3.8 through 4.1, as used in Cisco Carrier Routing System and other products, allow remote attackers to cause a denial of service (CPU consumption) via crafted network traffic, aka Bug ID CSCti59888.

Affected products

• Cisco IOS XR: version 3.8.0 only; version 3.8.1 only; version 3.8.2 only; version 3.8.3 only; version 3.8.4 only; version 3.9.0 only; …

Published 2012-05-02. Last modified 2026-06-16.