CVE-2015-0645: Cisco IOS XE

High severity, CVSS 7.8. EPSS: 2% chance of exploitation in the next 30 days.

The Layer 4 Redirect (L4R) feature in Cisco IOS XE 2.x and 3.x before 3.10.4S, 3.11 before 3.11.3S, 3.12 before 3.12.2S, 3.13 before 3.13.1S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to cause a denial of service (device reload) via malformed (1) IPv4 or (2) IPv6 packets, aka Bug ID CSCuq59131.

Affected products

• Cisco IOS XE: version 3.1s.0 only; version 3.1s.1 only; version 3.1s.2 only; version 3.1s.3 only; version 3.1s.4 only; version 3.1s.5 only; …

Published 2015-03-26. Last modified 2026-06-17.