High severityNVD Advisory· Published Apr 1, 2026· Updated Aug 10, 2026

CVE-2026-3987

Description

A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

WatchGuard/Fireware OS Web UIllm-create
WatchGuard/Fireboxllm-fuzzy

Patches

Vulnerability mechanics

References

psirt.watchguard.com/CVE-2026-3987nvd
www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009nvd

News mentions

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