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CVE-2026-3344

WatchGuard Firebox System Integrity Check Bypass

Published: Mar 3, 2026Updated: Mar 4, 2026 Sources: CVE List NVDCWE-440
NVD MITRE
4.9CVSSMEDIUM
EPSS Score
0.3%
Top 83.1%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

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.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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
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

firewarewatchguardNetworking Infrastructure
Fireware OSWatchGuardNetworking Infrastructure
watchguardcommercialUSNetworking Infrastructure

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

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

Timeline

Published
Mar 3, 2026
Last Updated
Mar 4, 2026

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