CVE-2026-3344
Received Received - Intake
Firmware Update Bypass Vulnerability in WatchGuard Fireware OS

Publication date: 2026-03-03

Last updated on: 2026-03-04

Assigner: WatchGuard Technologies, Inc.

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.
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Meta Information
Published
2026-03-03
Last Modified
2026-03-04
Generated
2026-06-16
AI Q&A
2026-03-03
EPSS Evaluated
2026-06-14
NVD
CVE-2026-3344
EUVD
EUVD-2026-9290
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
watchguard fireware From 12.0 (inc) to 12.11.8 (exc)
watchguard fireware From 12.5.9 (inc) to 12.5.17 (exc)
watchguard fireware From 2025.1 (inc) to 2026.1.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-440 A feature, API, or function does not perform according to its specification.
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Executive Summary

This vulnerability exists in WatchGuard Fireware OS and allows an attacker to bypass the filesystem integrity check of the operating system.

By exploiting this issue, an attacker can maintain limited persistence on the device by using a maliciously-crafted firmware update package.

The affected versions include Fireware OS 12.0 up to 12.11.7, 12.5.9 up to 12.5.16, and 2025.1 up to 2026.1.1.

Impact Analysis

An attacker exploiting this vulnerability can bypass the filesystem integrity checks and gain limited persistence on the affected device.

This means the attacker could potentially maintain a foothold on the system even after reboots or updates, which could lead to unauthorized access or control.

Compliance Impact

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