CVE-2026-3344

WatchGuard Firebox System Integrity Check Bypass

State: Published
Severity: 6.9 Medium
Published: Mar 3, 2026
Updated: Aug 10, 2026
Reserved: Feb 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N	WatchGuard

Weaknesses

CWE-440

Affected Products

Product	Versions
Fireware OSWatchGuard	2025.1 to before 2026.1.2Affected 12.0 to before 12.11.8Affected
Fireware OSWatchGuard	12.0 to before 12.5.17Affected

References

https://psirt.watchguard.com/CVE-2026-3344vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00005vendor-advisory

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