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CVE-2026-4266
UNKNOWN · CVSS n/a
EPSS exploitation probability: 0%
Published 2026-03-30T13:16:22.573 · Last modified 2026-06-17T10:56:19.663

Summary

An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user.This issue affects Fireware OS: 12.1 through 12.11.8 and 2025.1 through 2026.1.2. Note, this vulnerability does not affect Firebox platforms that do not support the Access Portal feature, including the T-15 and T-35.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.