CVE-2026-81433
8.7
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP packet.
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 |
Weaknesses
- CWE-120: CWE-120
- CWE-121: CWE-121
- CWE-787: CWE-787
References
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