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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-19316

Fireware OS Pre-Authentication Double Free in iked Allows Denial of Service (DoS)

Description

A double-free vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

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

  • 2025.0 to < 2026.2.2affected
  • 12.0 to < 12.12.2affected
  • 2026.3 to < 2026.3.1affected

WatchGuard Fireware OS

Default version status: unaffected

  • 12.0 to < 12.5.20affected

References