CVE-2026-13722#
WatchGuard Firebox Firmware Image Validation Bypass in WatchGuard Fireware OS
Summary #
WatchGuard Fireware OS contains a firmware validation bypass when processing a backup image via the backup/restore feature. An authenticated administrator can exploit this vulnerability to install a tampered firmware image.
Product status #
| Product | Affected | Not affected |
|---|---|---|
| Fireware OS | ||
| Default | >= 2025.1, < 2026.2.1, >= 12.0, < 12.12.1, >= 11.0, <= 11.12.4+541730 | >= 2026.2.1, >= 12.12.1, > 11.12.4+541730 |
| T15/T35 | >= 12.0 | — |
| EUCC | >= 12.0, < 12.11.9 | >= 12.11.9 |
Weakness Type and Impact #
Exploitation Status #
WatchGuard is not aware of any exploitation of this vulnerability in the wild.
Solution #
Fireware OS 2026.2.1, Fireware OS 12.12.1, Fireware OS 12.11.9
References #
Credits #
- Discovered internally by WatchGuardfinder