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OpenAdvisories
High · 8.6 CVE-2026-3342 EUVD-2026-9288GHSA-mg78-5w4c-gp57

WatchGuard Firebox Out of Bounds Write Vulnerability

Published Mar 3, 2026 · Updated Mar 4, 2026 · Assigned by WatchGuard

Description

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface.

This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.

Affected products

VendorProductAffectedFixed
WatchGuard Fireware OS 11.9 – ≤ 11.12.4+541730, 12.0 – ≤ 12.11.7, 12.5 – ≤ 12.5.16, 2025.1 – ≤ 2026.1.1 —

Advisories 1

References