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Microsoft Windows

CVE-2020-16908 — Windows Setup Elevation of Privilege Vulnerability

Important CVSS 7.8 EPSS 0.00939 📢 Publicly disclosed 2020-10 archive

Executive Summary

An elevation of privilege vulnerability exists in Windows Setup in the way it handles directories. A locally authenticated attacker could run arbitrary code with elevated system privileges. After successfully exploiting the vulnerability, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by ensuring Windows Setup properly handles directories.

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Oct 13 2020
Last Updated Oct 13 2020
Publicly Disclosed Yes
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00939 — 0.56242 percentile

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 7.0

EPSS Score

0.00939
probability of exploitation in the next 30 days
0.56242 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

15 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1803 for 32-bit Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1803 for ARM64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1803 for x64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1809 for 32-bit Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1809 for ARM64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1809 for x64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1903 for 32-bit Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1903 for ARM64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1903 for x64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1909 for 32-bit Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1909 for ARM64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 1909 for x64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 2004 for 32-bit Systems — Important Elevation of Privilege Unknown
Windows 10 Version 2004 for ARM64-based Systems — Important Elevation of Privilege Unknown
Windows 10 Version 2004 for x64-based Systems — Important Elevation of Privilege Unknown

Patches

1 patch
Article Type Restart
— Unknown

Known Exploits

Acknowledgments

Microsoft has not published researcher acknowledgments for this CVE, or they are not yet reflected in our data source. Check the MSRC advisory directly for the most current credit information.

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