CVE-2026-111107#
Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated Denial of Service
Summary #
A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially crafted login request. Repeated exploitation terminates all active administrator sessions and in-progress management operations and can prevent management of the device. Traffic processing is not affected.
Product status #
| Product | Affected | Not affected |
|---|---|---|
| Fireware OS | ||
| Default | >= 2025.1, < 2026.4, >= 12.0, < 12.12.4 | >= 2026.4, >= 12.12.4 |
| T15/T35 | >= 12.0, < 12.5.22 | >= 12.5.22 |
Weakness Type and Impact #
Exploitation Status #
WatchGuard is not aware of any exploitation of this vulnerability in the wild.
Solution #
Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22
References #
Credits #
- WatchGuard AI Security Researchfinder