CVE-2020-1548: Microsoft Windows 10

High severity, CVSS 7.8. EPSS: 1.2% chance of exploitation in the next 30 days.

An information disclosure vulnerability exists when the Windows WaasMedic Service improperly handles memory. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to improperly disclose memory. The security update addresses the vulnerability by correcting how the Windows WaasMedic Service handles memory.

Affected products

• Microsoft Windows 10: version 1803 only; version 1809 only; version 1903 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2016: version 1903 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2019: affected versions not specified

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