Description
A missing authentication vulnerability in Fireware OS's FireCluster state synchronization feature allows an unauthenticated attacker positioned on the cluster synchronization network segment to force premature VPN tunnel termination by sending crafted cluster synchronization traffic.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – < 2026.4, 12.0 – < 12.12.4, 12.0 – < 12.5.22 | 2026.4 |
Advisories 1
- WID-SEC-2026-4209 WatchGuard Fireware OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
References
- https://psirt.watchguard.com/CVE-2026-104381 vendor-advisory