CVE-2020-1571: Microsoft Windows 10

High severity, CVSS 7.3. EPSS: 1.1% chance of exploitation in the next 30 days.

An elevation of privilege vulnerability exists in Windows Setup in the way it handles permissions. 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 permissions.

Affected products

• Microsoft Windows 10: version 1803 only; version 1809 only; version 1903 only; version 1909 only; version 2004 only

Published 2020-08-17. Last modified 2026-06-17.