May 14, 2019—KB4495620 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 1903

Summary

Denial of service vulnerabilities exist when .NET Framework improperly handles objects in heap memory, or when .NET Framework and .NET Core improperly process RegEx strings.

To learn more about the vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE).

• CVE-2019-0820

• CVE-2019-0980

• CVE-2019-0981

• CVE-2019-0864

Known issues in this update

Microsoft is not currently aware of any issues in this update.

How to get this update

Install this update

To download and install this update, go to Settings, Update & Security, Windows Update, and then select Check for updates.

This update will be downloaded and installed automatically from Windows Update.
To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4495620.

Additional Information

Individual VSO bugs related to KB4495620