CVE-2026-13728

MEDIUM

WatchGuard Firebox Hardcoded Fallback Encryption Key in Access Portal Resource Credential Database

Title source: cna

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 affects Fireware OS 12.1 up to and including 12.12 and 2025.1 up to and including 2026.2. This vulnerability does not affect devices that do not support the Access Portal feature or standalone Fireboxes not deployed in a FireCluster.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00025

Scores

CVSS v3 4.4

EPSS 0.0013

EPSS Percentile 3.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-798

Status published

Products (3)

watchguard/fireware 12.1 - 12.12.1

WatchGuard/Fireware OS 12.1 - 12.12

WatchGuard/Fireware OS 2025.1 - 2026.2

Published Jul 03, 2026

Tracked Since Jul 03, 2026