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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-81433

Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Execution

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Status
Published
Published
Updated
Assigning organization
WatchGuard

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

WatchGuard Fireware OS

Default version status: unaffected

  • 2026.3 to < 2026.3.2affected
  • 2025.0 to < 2026.2.3affected
  • 12.0 to < 12.12.3affected

References