CVE-2026-13368: WatchGuard Fireware

High severity, CVSS 8.1. EPSS: 0.9% chance of exploitation in the next 30 days.

WatchGuard Fireware OS contains a race condition leading to a use-after-free vulnerability in LDAP authentication for the Mobile User VPN with IKEv2. A remote unauthenticated attacker could exploit this vulnerability to execute arbitrary code in the context of the iked process on Fireboxes that have a Mobile VPN with IKEv2 configured to use an external LDAP authentication server.

Affected products

• WatchGuard Fireware: from 2025.1, before 2026.2.1 (fixed in 2026.2.1); from 12.5, before 12.5.19 (fixed in 12.5.19); from 11.0.0, before 11.12.4 (fixed in 11.12.4); version 11.12.4 only; from 12.0, before 12.12.1 (fixed in 12.12.1)

Published 2026-07-03. Last modified 2026-08-28.