CVE Catalog
CVE-2026-8247
HighCVSS 7.7Summary
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS allows an unauthenticated attacker on the same local network segment to execute arbitrary code.
Risk Assessment
An attacker could take control of the WatchGuard device, leading to compromise of network integrity and confidentiality.
Recommendation
Immediately update Fireware OS to version 11.12.4_Update2 or later, 12.12.1 or later, and 2026.3 or later.
Original NVD description (English source)
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker on the same local network segment to execute arbitrary code. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.