CVE-2025-13940 MEDIUM

CVE-2025-13940: WatchGuard Firebox Boot Time System Integrity Check Bypass

Vendor Watchguard
Product Fireware OS
Weakness CWE-440
Published December 4, 2025
Last update December 5, 2025
View on NVD All CVEs

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.This issue affects Fireware OS: from 12.8.1 through 12.11.4, from 2025.1 through 2025.1.2.

Key dates

02Disclosure timeline

December 4, 2025 CVE published
December 5, 2025 Record updated