A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.

Description

A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.This issue affects Fireware OS 12.0 up to and including 12.11.7, 12.5.9 up to and including 12.5.16, and 2025.1 up to and including 2026.1.1.

Affected Products

References

• https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00005(Vendor Advisory)