CVE-2026-13722

High

Description

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.

SeverityHigh

CVSS7.2

Exploit probability—

ProductWatchguard Fireware

PublishedJul 3, 2026

First seenJul 3, 2026

Weakness typeCWE-347CWE-347

How to fix

Update

watchguard fireware2026.2.1, 12.12.1, 11.12.4 or later

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
watchguard fireware	2025.1 ≤ v < 2026.2.1, 12.5 ≤ v ≤ 12.5.18, 12.0 ≤ v < 12.12.1, 11.0.0 ≤ v < 11.12.4, 11.12.4	2026.2.1, 12.12.1, 11.12.4

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