Path Traversal in Watchguard Fireware Os

CVE-2026-3987

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…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.006 (70.7th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

References