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MicrosoftKB5036609

HistoryApr 09, 2024 - 7:00 a.m.

April 9, 2024-KB5036609 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

2024-04-0907:00:00

Microsoft

support.microsoft.com

124

windows 10

version 1607

windows server 2016

security improvements

remote code execution vulnerability

cumulative update

.net framework defense

quality and reliability improvements

known issues

windows update

microsoft update catalog

wsus

prerequisites

restart requirement

help and support

CVSS3

7.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

AI Score

8.2

Confidence

Low

EPSS

Percentile

9.0%

JSON

April 9, 2024-KB5036609 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

Release Date:
April 9, 2024 Version: ** .NET Framework 4.8**

The April 9, 2024 update for Windows 10, version 1607 and Windows Server 2016 includes security and cumulative reliability improvements in .NET Framework 4.8. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.

Summary

Security Improvements CVE-2024-21409 - .NET Framework Remote Code Execution Vulnerability
This security update addresses a remote code execution vulnerability detailed in CVE-2024-21409. .NET Framework Defense in Depth Vulnerability
This security update addresses an issue where version of the OSS zlib library is out of date. .NET Framework Defense in Depth Vulnerability

This security update addresses an issue in AIA fetching process. Quality and Reliability Improvements ASP.NET	- Addresses an issue with JavaScriptSerializer where after installing the January Security and Quality update there is a performance degradation.
CLR1	- Addresses an issue with thread pool recycled lists become unresponsive on multi-CPU-group computers.
1Common Language Runtime (CLR)

Known issues in this update

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

How to get this update

Install this updateRelease Channel	Available	Next Step
Windows Update and Microsoft Update	Yes	None. This update will be downloaded and installed automatically from Windows Update.
Windows Update for Business	Yes	None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	Yes	This update will automatically sync with WSUS if you configure as follows: Product: Windows 10, version 1607 and Windows Server 2016Classification: Security Updates File information For a list of the files that are provided in this update, download the file information for cumulative update.

Prerequisites

To apply this update, you must have .NET Framework 4.8 installed.

Restart requirement

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.