CVE-2026-86134
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
A NULL pointer dereference vulnerability in the WatchGuard Fireware OS authentication process allows a remote, unauthenticated attacker to crash the management daemon by sending a specially request to the login interface, resulting in a denial of service.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| WatchGuard | Fireware OS | 2026.3 < 2026.3.2 | affected |
| WatchGuard | Fireware OS | 2025.0 < 2026.2.3 | affected |
| WatchGuard | Fireware OS | 12.0 < 12.12.3 | affected |
| WatchGuard | Fireware OS | 12.0 < 12.5.21 | affected |
Weaknesses
- CWE-476: CWE-476
References
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