Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – < 2026.2.1, 12.0 – < 12.12.1, 11.0, 12.0 – < 12.11.9, 12.0 – < 12.5.19 | 2026.2.1 |
Advisories 1
- WID-SEC-2026-2193 WatchGuard Firebox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 2, 2026
References
- https://psirt.watchguard.com/CVE-2026-8247 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00026 vendor-advisory