CVE-2026-3344 PUBLISHED

WatchGuard Firebox System Integrity Check Bypass

Assigner: WatchGuard
Reserved: 27.02.2026 Published: 03.03.2026 Updated: 03.03.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	WatchGuard
Product	Fireware OS
Versions	Default: unaffected affected from 12.0 to 12.11.7 (incl.) affected from 12.5.9 to 12.5.16 (incl.) affected from 2025.1 to 2026.1.1 (incl.)

Exploits

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

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0005

Problem Types

CWE-440: Expected Behavior Violation CWE

Impacts

CAPEC-184 Software Integrity Attack