CVE-2025-13940

WatchGuard Firebox Boot Time System Integrity Check Bypass

State: Published
Severity: 6.7 Medium
Published: Dec 4, 2025
Updated: Aug 10, 2026
Reserved: Dec 3, 2025

Description

An Expected Behavior Violation [CWE-440] vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS boot time system integrity check and prevent the Firebox from shutting down in the event of a system integrity check failure. The on-demand system integrity check in the Fireware Web UI will correctly show a failed system integrity check message in the event of a failure.

Scores

CVSS	Score	Vector	Source
4.0	6.7 Medium	CVSS:4.0/AV:L/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 2025.1.3Affected 12.8.1 to before 12.11.5Affected

References

https://psirt.watchguard.com/CVE-2025-13940vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00026vendor-advisory

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