CVE-2016-20091

8.5 highEPSS 0.2%

Windows Firewall Control 4.8.6.0 contains an unquoted service path vulnerability that allows local attackers to escalate privileges by inserting malicious executables in the service path. Attackers can place executable files in unquoted path directories that the wfcs.exe service will execute with LocalSystem privileges upon service restart or system reboot.

Severity

CVSS 4.0

8.5 high

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
CWE: CWE-428
Published: 2026-06-19
Modified: 2026-09-29
Record from: the NVD, synced 2026-10-19

References

http://www.binisoft.org
https://www.exploit-db.com/exploits/40443
https://www.vulncheck.com/advisories/windows-firewall-control-unquoted-service-path-privilege-escalation

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