CVE-2020-1137: Microsoft Windows 10

High severity, CVSS 7.8. EPSS: 0.9% chance of exploitation in the next 30 days.

An elevation of privilege vulnerability exists in the way the Windows Push Notification Service handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how the Windows Push Notification Service handles objects in memory.

Affected products

• Microsoft Windows 10: version 1709 only; version 1803 only; version 1809 only; version 1903 only; version 1909 only
• Microsoft Windows Server 2016: version 1803 only; version 1903 only; version 1909 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2020-05-21. Last modified 2026-08-19.