Medium [CVE-2026-13728] 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 medium-severity WatchGuard advisory covers CVE-2026-13728 affecting Fireware OS.
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Summary
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.
- Fireware OS 2025.1 before 2026.2.1
- Fireware OS 12.0 before 12.12.1
- Fireware OS 12.0 before 12.11.9
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 2026.2.1
- 12.12.1
- 12.11.9
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 2026.2.1, 12.12.1, 12.11.9. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Discussion(0)
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