CVE-2026-13728

Medium

Description

In exception circumstances, WatchGuard Fireware OS on a FireCluster may use a hard-coded encryption key to encrypt saved credentials for Access Portal resources. This vulnerability does not affect devices that do not support the Access Portal feature or standalone Fireboxes not deployed in a FireCluster.

SeverityMedium

CVSS4.4

Exploit probability—

ProductWatchguard Fireware

PublishedJul 3, 2026

First seenJul 3, 2026

Weakness typeCWE-798Hard-coded credentials

How to fix

Update

watchguard fireware12.12.1, 2026.2.1 or later

Vendor advisories

psirt.watchguard.com/CVE-2026-13728
watchguard.com/wgrd-psirt/advisory/wgsa-2026-00025

Affected products

Product	Affected versions	Fixed in
watchguard fireware	12.1 ≤ v < 12.12.1, 2025.1 ≤ v < 2026.2.1	12.12.1, 2026.2.1

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