High severityNVD Advisory· Published Apr 1, 2026· Updated Apr 3, 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.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.

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

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

News mentions

No linked articles in our index yet.

cvss	0.455
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000