Vulnerability · Published Oct 24, 2025 · Assigned by WatchGuard
CVE-2025-4106WatchGuard Firebox leftover debug code vulnerability
High 8.9
In plain English
A high-severity security flaw in Fireware OS from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 4.0)8.9High
Exploit odds (30 days)0.3%top 74.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | 12.0 – before 12.11.3 |
| WatchGuard | Fireware OS | 12.0 – before 12.5.13 |
Weakness: CWE-489 · 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
References
- https://psirt.watchguard.com/CVE-2025-4106 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00010 vendor-advisory