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Critical · 9.3 CVE-2026-19315 EUVD-2026-67339GHSA-mv65-j857-xm58

Fireware OS Pre-Authentication Type Confusion in iked Allows Remote Code Execution

Published Aug 27, 2026 · Updated Sep 3, 2026 · Assigned by WatchGuard

Description

A type confusion vulnerability in the iked process of WatchGuard Fireware OS allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.

Affected products

VendorProductAffectedFixed
WatchGuard Fireware OS 2025.0 – < 2026.2.2, 12.0 – < 12.12.2, 2026.3 – < 2026.3.1, 12.0 – < 12.5.20 2026.2.2

Advisories 2

References