CVE-2026-111107
Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated Denial of Service
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1286 CWE-248 CWE-476 |
| Vendor | watchguard |
| Product | fireware os |
| Published | Oct 27, 2026 |
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Affected Versions
WatchGuard / Fireware OS
2025.1 < 2026.4 12.0 < 12.12.4
WatchGuard / Fireware OS
12.0 < 12.5.22
References
Credits
WatchGuard AI Security Research