CVE-2026-3344
Modified Modified - Updated After Analysis

Firmware Update Bypass Vulnerability in WatchGuard Fireware OS

Publication date: 2026-03-03

Last updated on: 2026-08-10

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-03-03
Last Modified
2026-08-10
Generated
2026-08-15
AI Q&A
2026-03-03
EPSS Evaluated
2026-08-14
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
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-440 A feature, API, or function does not perform according to its specification.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
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.

Detection Guidance

I don't know

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

I don't know

Mitigation Strategies

I don't know

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-3344. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart