CVE-2016-1361: Cisco IOS XR

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Cisco IOS XR through 4.3.2 on Gigabit Switch Router (GSR) 12000 devices does not properly check for a Bidirectional Forwarding Detection (BFD) header in a UDP packet, which allows remote attackers to cause a denial of service (line-card restart) via a crafted packet, aka Bug ID CSCuw56900.

Affected products

• Cisco IOS XR: version 3.3.3 only; version 3.4.1 only; version 3.4.2 only; version 3.4.3 only; version 3.5.2 only; version 3.5.3 only; …

Published 2016-03-12. Last modified 2026-06-17.