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CVE-2026-3344: CWE-440 in WatchGuard Fireware OS

0
Medium
VulnerabilityCVE-2026-3344cvecve-2026-3344cwe-440
Published: 03/03/2026 (03/03/2026, 13:17:56 UTC)
Source: CVE Database V5
Vendor/Project: WatchGuard
Product: Fireware OS

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.

CVSS v4.0

Score 6.9medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
High
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
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

Affected software

WatchGuard

Fireware OS

Affected versions
>=2025.1 <2026.1.2>=12.0 <12.11.8

WatchGuard

Fireware OS

Affected versions
>=12.0 <12.5.17
GitHub Actionsmore threats →ai
watchguard/fireware-os
pkg:github/watchguard/fireware-os
Affected versions
=12.0=12.5.9=2025.1<=12.11.7<=12.5.16<=2026.1.1

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/12/2026, 14:06:41 UTC

Technical Analysis

This vulnerability in WatchGuard Fireware OS enables an attacker with high privileges to bypass the operating system's filesystem integrity verification mechanism. By crafting a malicious firmware update package, the attacker can maintain limited persistence on the device. The issue is classified under CWE-440, indicating improper restriction of operations or permissions. The CVSS 4.0 base score is 6.9, reflecting a medium severity with network attack vector, low attack complexity, no user interaction, and high impact on integrity and availability.

Potential Impact

An attacker with high privileges can bypass filesystem integrity checks and maintain limited persistence on the affected Fireware OS device. This could allow unauthorized modifications to the system firmware, potentially undermining system security and stability. However, the impact is limited to integrity and availability, with no confidentiality impact reported. There are no known exploits in the wild at this time.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or fix information is provided, users should monitor WatchGuard's advisories for updates. Until a fix is available, restrict access to high privilege accounts and carefully validate firmware update sources to reduce risk.

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Technical Details

Data Version
5.2
Assigner Short Name
WatchGuard
Date Reserved
2026-02-27T15:37:53.452Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 69a6e6b4d1a09e29cb46e4dd

Added to database: 03/03/2026, 13:48:36 UTC

Last enriched: 08/12/2026, 14:06:41 UTC

Last updated: 09/14/2026, 10:01:30 UTC

Views: 171

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