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CVE-2020-16939— Group Policy Elevation of Privilege Vulnerability

Quick assessment

Affected

Microsoft Windows 10 Version 1803

Exploitation

Public or AI PoC available; prioritize validation

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows是美国微软（Microsoft）公司的一套个人设备使用的操作系统。 Windows 存在授权问题漏洞。该漏洞允许攻击者可以在提升的上下文中运行进程。以下产品及版本受到影响： Windows 10 1909版本， Windows RT 8.1版本， Windows Server 2016版本， Windows 7版本， Windows 10 1709版本， Windows Server 1903版本， Windows 10 2004版本， Windows Server 20

CVSS 7.8 · High EPSS 2.42% · P84 Updated Feb 24, 2026

Possible ATT&CK Techniques 2 AI

T1078.001 · Default Accounts T1548.002 · Bypass User Account Control

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I. Basic Information for CVE-2020-16939

Vulnerability Information

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Vulnerability Title

Group Policy Elevation of Privilege Vulnerability

Source: CVE Program / CVE List V5

Vulnerability Description

An elevation of privilege vulnerability exists when Group Policy improperly checks access. An attacker who successfully exploited this vulnerability could run processes in an elevated context. To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system. The security update addresses the vulnerability by correcting how Group Policy checks access.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Vulnerability Title

Microsoft Windows 授权问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE
Microsoft	Windows 10 Version 1803	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*`
Microsoft	Windows 10 Version 1809	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10_1809:::::::x86:*`
Microsoft	Windows Server 2019	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2019::::::::`
Microsoft	Windows Server 2019 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2019::::::::`
Microsoft	Windows 10 Version 1909	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10_1909:::::::x86:*`
Microsoft	Windows Server, version 1909 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_1909::::::::`
Microsoft	Windows 10 Version 1709 for 32-bit Systems	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10:1709:::::::*`
Microsoft	Windows 10 Version 1709	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10:1709:::::::*`
Microsoft	Windows 10 Version 1903 for 32-bit Systems	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10:1903:::::::*`
Microsoft	Windows 10 Version 1903 for x64-based Systems	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10:1903:::::::*`
Microsoft	Windows 10 Version 1903 for ARM64-based Systems	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10:1903:::::::*`
Microsoft	Windows Server, version 1903 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_1903::::::::`
Microsoft	Windows 10 Version 2004	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*`
Microsoft	Windows Server version 2004	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2004::::::::`
Microsoft	Windows 10 Version 1507	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10_1507:::::::x86:*`
Microsoft	Windows 10 Version 1607	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_10_1607:::::::x86:*`
Microsoft	Windows Server 2016	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2016::::::::`
Microsoft	Windows Server 2016 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2016::::::::`
Microsoft	Windows 7	6.1.0 ~ publication	`cpe:2.3:o:microsoft:windows_7::sp1:::::x86:`
Microsoft	Windows 7 Service Pack 1	6.1.0 ~ publication	`cpe:2.3:o:microsoft:windows_7::sp1:::::x64:`
Microsoft	Windows 8.1	6.3.0 ~ publication	`cpe:2.3:o:microsoft:windows_8.1:::::::x86:*`
Microsoft	Windows Server 2008 Service Pack 2	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_sp2:::::::x64:*`
Microsoft	Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_sp2:::::::x64:*`
Microsoft	Windows Server 2008 Service Pack 2	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_sp2:::::::x86:*`
Microsoft	Windows Server 2008 R2 Service Pack 1	6.1.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_R2:::::::x64:*`
Microsoft	Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_R2:::::::x64:*`
Microsoft	Windows Server 2012	6.2.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012:::::::x64:*`
Microsoft	Windows Server 2012 (Server Core installation)	6.2.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012:::::::x64:*`
Microsoft	Windows Server 2012 R2	6.3.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012_R2:::::::x64:*`
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012_R2:::::::x64:*`

II. Public POCs for CVE-2020-16939

#	POC Description	Source Link	Shenlong Link
1	PoC code for CVE-2020-16939 Windows Group Policy DACL Overwrite Privilege Escalation	https://github.com/rogue-kdc/CVE-2020-16939	POC Details

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2020-16939

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Vendor Advisories for CVE-2020-16939 (2)

https://www.zerodayinitiative.com/advisories/ZDI-20-1254/ x_refsource_MISC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16939 x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2020-16939

Same Patch Batch · Microsoft · 2020-10-16 · 89 CVEs total

CVE-2020-1080	8.8 HIGH	Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2020-16898	8.8 HIGH	Windows TCP/IP Remote Code Execution Vulnerability
CVE-2020-16911	8.8 HIGH	GDI+ Remote Code Execution Vulnerability
CVE-2020-16891	8.8 HIGH	Windows Hyper-V Remote Code Execution Vulnerability
CVE-2020-16946	8.7 HIGH	Microsoft Office SharePoint XSS Vulnerability
CVE-2020-16945	8.7 HIGH	Microsoft Office SharePoint XSS Vulnerability
CVE-2020-16944	8.7 HIGH	Microsoft SharePoint Reflective XSS Vulnerability
CVE-2020-16952	8.6 HIGH	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16951	8.6 HIGH	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16932	7.8 HIGH	Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16954	7.8 HIGH	Microsoft Office Remote Code Execution Vulnerability
CVE-2020-16940	7.8 HIGH	Windows - User Profile Service Elevation of Privilege Vulnerability
CVE-2020-16936	7.8 HIGH	Windows Backup Service Elevation of Privilege Vulnerability
CVE-2020-16935	7.8 HIGH	Windows COM Server Elevation of Privilege Vulnerability
CVE-2020-16929	7.8 HIGH	Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16928	7.8 HIGH	Microsoft Office Click-to-Run Elevation of Privilege Vulnerability
CVE-2020-16924	7.8 HIGH	Jet Database Engine Remote Code Execution Vulnerability
CVE-2020-16923	7.8 HIGH	Microsoft Graphics Components Remote Code Execution Vulnerability
CVE-2020-16930	7.8 HIGH	Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16967	7.8 HIGH	Windows Camera Codec Pack Remote Code Execution Vulnerability

Showing top 20 of 89 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1803

Same vendor: Microsoft

V. Comments for CVE-2020-16939

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2020-16939— Group Policy Elevation of Privilege Vulnerability

Quick assessment

Possible ATT&CK Techniques 2 AI

I. Basic Information for CVE-2020-16939

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2020-16939

III. Intelligence Information for CVE-2020-16939

Vendor Advisories for CVE-2020-16939 (2)

Same Patch Batch · Microsoft · 2020-10-16 · 89 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2020-16939

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