Vulnerability Report

CVE-2026-3344

Title: Firmware Integrity Bypass in WatchGuard Fireware OS

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-3344.

CWE Category CWE-440

Published Date Mar 03, 2026

Modified Date Mar 04, 2026

Exploit Status Not Found

Score 6.9 CVSS v4.0

Exploit Probability (EPSS)

0.26%

Vulnerability Summary

CVE-2026-3344: 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.

Impacted Vendors

watchguard 38

Reference Links

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0005

CVSS v4.0

Source Entity 5d1c2695-1a31-4499-88ae-e847036fd7e3

Severity MEDIUM

6.9

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW VECTOR

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

Source Entity [email protected]