CVE-2025-11838

WatchGuard Firebox iked Memory Corruption Vulnerability

High 8.7 CVSS v4.0 › Published 2025-12-04Updated 2026-08-10

Summary #

A memory corruption vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker to trigger a Denial of Service (DoS) condition in the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.

Product status #

ProductAffectedNot affected
Fireware OS
Default >= 2025.1, <= 2025.1.3, >= 12.6.1, <= 12.11.5> 2025.1.3, > 12.11.5

Weakness Type and Impact #

  • CWECWE-763Release of Invalid Pointer or Reference
  • CAPECCAPEC-129Pointer Manipulation

Exploitation Status #

WatchGuard is not aware of any exploitation of this vulnerability in the wild.

Solution #

Fireware OS 2025.1.3, Fireware OS 12.11.5

References #

Credits #

  • McCaulay Hudson (@_McCaulay) of watchTowr finder