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OpenAdvisories
Critical · 9.2 CVE-2026-112710 EUVD-2026-111154GHSA-hwf3-gg9q-pwrm

Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution

Published Oct 27, 2026 · Updated Nov 4, 2026 · Assigned by WatchGuard

Description

A heap-based buffer overflow vulnerability exists in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition and potentially execute arbitrary code by returning a specially crafted response.

Affected products

VendorProductAffectedFixed
WatchGuard Fireware OS 2025.1 – < 2026.4, 12.0 – < 12.12.4, 12.0 – < 12.5.22 2026.4

Advisories 1

References