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CVE-2025-13940

WatchGuard Firebox Boot Time System Integrity Check Bypass

Published: Dec 4, 2025Updated: Dec 10, 2025 Sources: CVE List NVD BDUCWE-440
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.1%
Top 98.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:HA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-440

Affected Products

Fireware OSWatchguard Technologies Inc.Networking Infrastructure
firewarewatchguardNetworking Infrastructure
Fireware OSWatchGuardNetworking Infrastructure
watchguard technologies inc.commercialUSNetworking Infrastructureaka watchguard technologies inc.
watchguardcommercialUSNetworking Infrastructure

Exploitability

Official Patch Available

References

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

Timeline

Published
Dec 4, 2025
Last Updated
Dec 10, 2025

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