MajorCritical vulnerability

CVE-2026-81433 (CVSS 8.7)

NVD · officialPublished Sep 30, 2026Risk 37/100

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.

Technical details

CVSS

8.7

AV:AdjacentAC:LowPR:NoneUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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