CVE-2026-3987

Published: Apr 1, 2026

Modified: Apr 3, 2026

PUBLISHED

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.This issue affects Fireware OS 12.6.1 up to and including 12.11.8 and 2025.1 up to and including 2026.1.2.

Vendor	Product	Versions
WatchGuard	Fireware OS	affected `12.6.1 - <= 12.11.8` affected `2025.1 - <= 2026.1.2`

Weaknesses (CWE)

CWE-22

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009

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CVE-2026-3987

Description

Affected Products

Weaknesses (CWE)

References