CVE-2026-111107 Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated Denial of Service
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-111107?
CVE-2026-111107 is a high-severity vulnerability in WatchGuard Fireware OS, published on 27 Oct 2026.
Official description
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.
Which versions are affected by CVE-2026-111107?
How do I fix CVE-2026-111107?
No fix has been published for CVE-2026-111107 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111107 being exploited?
There is no known exploitation of CVE-2026-111107 in the wild and no public exploit code.
Sources
Also known as GHSA-3mfr-hwvw-chvq.