CVE-2020-16939

7.8 HIGH
Published: October 16, 2020 Modified: February 23, 2026
View on NVD

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>

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1254/
Source: secure@microsoft.com
Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16939
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1254/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.8 / 10.0
EPSS (Exploit Probability)
19.9%
95th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

microsoft