CVE-2015-6431: Cisco IOS XE

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

Cisco IOS XE 16.1.1 allows remote attackers to cause a denial of service (device reload) via a packet with the 00-00-00-00-00-00 source MAC address, aka Bug ID CSCux48405.

Affected products

• Cisco IOS XE: version 16.1.1 only

Published 2015-12-23. Last modified 2026-06-17.