January 14, 2020
.NET Framework 3.5 and 4.8
A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly. An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
To learn more about the vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE).
Known issues in this update
Microsoft is not currently aware of any issues in this update.
How to get this update
Install this update
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.
For a list of the files that are provided in this update, download the file information for cumulative update.
Additional information about this update
The following articles contain additional information about this update as it relates to individual product versions.
4535101 Description of the Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 and Windows Server 2019 (KB4535101)
Information about protection and security
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Learn how we guard against cyber threats: Microsoft Security