CVE-2015-6263: Cisco IOS

Medium severity, CVSS 6.3. EPSS: 1% chance of exploitation in the next 30 days.

The RADIUS client implementation in Cisco IOS 15.4(3)M2.2, when a shared RADIUS secret is configured, allows remote RADIUS servers to cause a denial of service (device reload) via malformed answers, aka Bug ID CSCuu59324.

Affected products

• Cisco IOS: version 15.4(3)m2.2 only

Published 2015-10-12. Last modified 2026-06-17.