May 14, 2019—KB4499405 Cumulative Update for .NET Framework 3.5, 4.7.2, and 4.8 for Windows 10, version 1809 and Windows Server 2019

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

Additional information about this update

The following articles contain additional information about this update as it relates to individual product versions.

• 4495590 Description of the Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10, version 1809 and Windows Server 2019 (KB4495590)

• 4495618 Description of the Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 1809 and Windows Server 2019 (KB4495618)

Information about protection and security

• Protect yourself online: Windows Security support

• Learn how we guard against cyber threats: Microsoft Security