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.
- through 12.12
- through 2026.2
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
- 2026.2.1
- 12.12.1
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Mitigation
Upgrade to a fixed release: 2026.2.1, 12.12.1. 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 15 days ago·verify at source
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