PT-2026-50909 · Binnano · Windows Firewall Control

CVE-2016-20091

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Published

2026-06-19

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Updated

2026-06-22

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Windows Firewall Control version 4.8.6.0
Description An unquoted service path issue exists where the wfcs.exe service is configured with a path containing spaces that is not enclosed in quotes. This allows a local attacker to escalate privileges by placing a malicious executable file within the unquoted directories of the service path. Upon a system reboot or service restart, the service will execute the malicious file with LocalSystem privileges.
Recommendations Update Windows Firewall Control to a version where the service path for wfcs.exe is properly quoted.

Fix

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Weakness Enumeration

Related Identifiers

CVE-2016-20091

Affected Products

Windows Firewall Control