Tara Overfield

Today, we are releasing the May 2019 Cumulative Update, Security and Quality Rollup, and Security Only Update.
Security
CVE-2019-0820 – Denial of Service Vulnerability
A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET application.

Today, we released the March 2019 Update for Windows 10 version 1809 and Windows Server 2019.
Quality and Reliability
This release contains the following quality and reliability improvements.
CLR

Addresses an issue in which the Framework throws an exception if the year in the parsed date is greater than or equal to the start year of the next era.

Today, we released the March 2019 Update.
Quality and Reliability
This release contains the following quality and reliability improvements.
CLR

Addresses an issue in which the Framework throws an exception if the year in the parsed date is greater than or equal to the start year of the next era.

Today, March 1, we released the February 2019 Cumulative Update for Windows 10 version 1809 and Windows Server 2019. This release contains the following quality and reliability improvements.

Today, we released the February 2019 Preview of Quality Rollup. Quality and Reliability This release contains the following quality and reliability improvements. CLR Addresses an issue in System.Threading.Timer where a single global queue that was protected by a single process-wide lock causing an issue with scalability where Timers are used frequently on a multi-CPU machine.

Final Update 2/19/19 @1:30 PM (PST): This advisory is now resolved with no action needed from Microsoft Customers. The issue was not applicable to any valid or supported configuration. There is no consequence for .NET 4.8 Preview customers.
We strive to share timely information to protect our customer’s productivity,

Updated: February 15, 2019

A new Advisory on February 2019 Security update for Windows 10 update 1809 has been released today for issues customers have reported with .NET 4.8 Preview and this security update for Windows 10 update 1809 installed.

Today, we are releasing the January 22, 2018 .NET Framework Cumulative Update for Windows 10 version 1809 and Windows Server 2019.
For more information about the new Cumulative Updates for .NET Framework for Windows 10 version 1809 and Windows Server 2019 please refer to this recent announcement.

The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog.

Today, we are releasing the January 2019 Security and Quality Rollup.
Security
CVE-2019-0545 – Windows Security Feature Bypass Vulnerability
This security update resolves a vulnerability in Microsoft .NET Framework that may cause an information disclosure that allows bypassing Cross-origin Resource Sharing (CORS) configurations.