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.

INFO

Published Date :

2026-04-01T21:32:30.426Z

Last Modified :

2026-04-03T03:55:30.681Z

Source :

WatchGuard
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3987 vulnerability.

Vendors Products
Watchguard
  • Fireware Os
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3987.

URL Resource
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability