CVE-2026-13728

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

State: Published
Severity: 5.9 Medium
Published: Jul 2, 2026
Updated: Aug 27, 2026
Reserved: Jun 29, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.9 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N	WatchGuard

Weaknesses

CWE-798

Affected Products

Product	Versions
Fireware OSWatchGuard	2025.1 to before 2026.2.1Affected 12.0 to before 12.12.1Affected
Fireware OSWatchGuard	12.0 to before 12.11.9Affected

References

https://psirt.watchguard.com/CVE-2026-13728vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00025vendor-advisory

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