PT-2026-55326 · Watchguard · Fireware Os

Published 2026-07-02 · Updated 2026-07-03 · CVE-2026-13084

Mitre

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

A null pointer dereference vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to create a denial-of-service (DoS) condition by sending specially crafted IKEv2 messages. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.

This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4 Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-13084

Affected Products

Fireware Os

References · 2

• https://watchguard.com/wgrd-psirt/advisory/wgsa-2026-00024 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-13084 · Security Note