Description
An HTTP Request Smuggling [CWE-444] vulnerability in the Authentication portal of WatchGuard Fireware OS allows a remote attacker to evade request parameter sanitation and perform a reflected self-Cross-Site Scripting (XSS) attack.
WatchGuard does not believe there is a practical exploit chain with a meaningful security impact for this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 12.0 – < 12.11.3 | 12.11.3 |
Advisories 1
- WID-SEC-2025-1528 WatchGuard Firebox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 4, 2025
References
- https://psirt.watchguard.com/CVE-2025-6999 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00014 vendor-advisory