Improper validation of integrity check value in Fireware OS - CVE-2026-13722

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Main Vulnerability Database Vulnerabilities #VU136891

Improper validation of integrity check value in Fireware OS - CVE-2026-13722

Published: July 3, 2026


Vulnerability identifier: #VU136891
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-13722
CWE-ID: CWE-354
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: WatchGuard
Affected software:
Fireware OS

Detailed vulnerability description

The vulnerability allows a remote user to install a tampered firmware image.

The vulnerability exists due to improper integrity check in the backup/restore feature when processing a backup image. A remote privileged user can submit a tampered backup image to install a tampered firmware image.


How to mitigate CVE-2026-13722

Install security update from vendor's website.

Sources