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CVE-2020-16939

nvd nist
Published: Oct 16, 2020Modified: Feb 23, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD (Secondary)

Description

<p>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.</p> <p>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.</p> <p>The security update addresses the vulnerability by correcting how Group Policy checks access.</p>

Affected (20)

8 products
Windows 10
Windows 7
Windows 8.1
Windows Rt 8.1
Windows Server 2008
Windows Server 2012
Windows Server 2016
Windows Server 2019
Configuration A
20 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
All versions
Version 1607
Version 1709
Version 1803
Version 1809
Version 1903
Version 1909
Version 2004
All versions
All versions
All versions
Microsoft
All versions
Version r2 sp1
Microsoft
All versions
Version r2
Microsoft
All versions
Version 1903
Version 1909
Version 2004
All versions

References (4)

Source: secure@microsoft.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.