Cyber Resilience

CVE-2016-20091

Public PoC
Published
19 June 2026
Modified
22 June 2026
CVSS Score v4 8.5
Click a component to see what it means
Raw vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0016 6th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2016-20091 is a high-severity Unquoted Search Path or Element (CWE-428) vulnerability in Binisoft (inferred from references). Its CVSS base score is 8.5 (High).

Operationally, ranked at the 6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

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…

more

with LocalSystem privileges upon service restart or system reboot.

CWE(s)
CWE-428

Related Threats

CVEs Like This One

CVE-2025-10714Shared CWE-428
CVE-2020-37101Shared CWE-428
CVE-2023-24575Shared CWE-428
CVE-2025-12507Shared CWE-428
CVE-2025-41359Shared CWE-428
CVE-2025-61871Shared CWE-428
CVE-2025-66575Shared CWE-428
CVE-2019-25288Shared CWE-428
CVE-2023-4991Shared CWE-428
CVE-2020-37232Shared CWE-428

Affected Assets

Binisoft
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent path-handling flaws such as unquoted elements during development.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing in development can detect unquoted search-path issues before deployment.

A.8.19 Installation of software on operational systems partial match
degrades

Enforcing controlled software installation can prevent unquoted search-path elements in executables and scripts.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle practices include input validation and path handling that reduce unquoted search-path weaknesses.

A.8.27 Secure system architecture and engineering principles partial match
degrades

Secure system architecture and engineering principles require safe path construction and quoting conventions.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly mandate quoting search paths and avoiding unsafe path construction.

A.8.32 Change management partial match
degrades

Change-management processes can enforce review of path-handling changes that might introduce unquoted elements.

References