CVE-2014-3379: Cisco IOS XR

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

Cisco IOS XR 5.1 and earlier on Network Convergence System 6000 devices allows remote attackers to cause a denial of service (NPU and card hang or reload) via a malformed MPLS packet, aka Bug ID CSCuq10466.

Affected products

• Cisco IOS XR: version 2.0 only; version 3.0 only; version 3.0.1 only; version 3.1 only; version 3.1.0 only; version 3.2 only; …
• Cisco Network Convergence System 6000
• Cisco Network Convergence System 6008

Published 2014-09-20. Last modified 2026-06-17.