CVE-2026-13722

UNKNOWN 0.0

WatchGuard Firebox Firmware Image Validation Bypass in WatchGuard Fireware OS

CVSS Score

0.0

EPSS Score

0.2%

EPSS Percentile

14th

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.

CWE	CWE-347
Vendor	watchguard
Product	fireware os
Published	Jul 2, 2026
Last Updated	Aug 10, 2026

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Affected Versions

WatchGuard / Fireware OS

2025.1 < 2026.2.1 12.0 < 12.12.1 11.0 ≤ 11.12.4+541730

WatchGuard / Fireware OS

12.0 < *

References

NVD ↗ CVE.org ↗ EPSS Data ↗

psirt.watchguard.com: https://psirt.watchguard.com/CVE-2026-13722 watchguard.com: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00022

Credits

Discovered internally by WatchGuard