Description
A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 2025.0 – < 2026.2.2, 12.0 – < 12.12.2, 2026.3 – < 2026.3.1, 12.0 – < 12.5.20 | 2026.2.2 |
Advisories 1
- WID-SEC-2026-3068 WatchGuard Firebox OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 9, 2026
References
- https://psirt.watchguard.com/CVE-2026-78008 vendor-advisory