CVE-2025-4106 WatchGuard Firebox leftover debug code vulnerability
Authenticated admins can enable a diagnostic debug shell via leftover code, allowing unauthorized command execution and privilege escalation on Firebox devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-4106?
CVE-2025-4106 is a high-severity vulnerability in WatchGuard Fireware OS, published on 24 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-489
Which versions are affected by CVE-2025-4106?
How do I fix CVE-2025-4106?
No fix has been published for CVE-2025-4106 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-4106 being exploited?
There is no known exploitation of CVE-2025-4106 in the wild and no public exploit code.
Sources
Also known as GHSA-23g2-f757-4428.