CVE-2015-6294: Cisco IOS

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

Cisco IOS 15.2(3)E and earlier and IOS XE 3.6(2)E and earlier allow remote attackers to cause a denial of service (functionality loss) via crafted Cisco Discovery Protocol (CDP) packets, aka Bug ID CSCuu25770.

Affected products

• Cisco IOS: version 15.2(2)e only; version 15.2(2)e1 only; version 15.2(2)e2 only; version 15.2(3)e only; version 15.2e only
• Cisco IOS XE: version 3.6e.0 only; version 3.6e.1 only; version 3.6e.2 only

Published 2015-09-18. Last modified 2026-06-17.