CVE-2025-4106 HIGH

CVE-2025-4106: WatchGuard Firebox leftover debug code vulnerability

Vendor Watchguard
Product Fireware OS
Weakness CWE-489
Published October 24, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

8.9/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

What the vulnerability does

01Description

An authenticated admin user with access to both the management WebUI and command line interface on a Firebox can enable a diagnostic debug shell by uploading a platform and version-specific diagnostic package and executing a leftover diagnostic command. This issue affects Fireware OS: from 12.0 before 12.11.2.

Key dates

02Disclosure timeline

October 24, 2025 CVE published
February 26, 2026 Record updated