April 8, 2025-KB5055681 Cumulative Update for . NET Framework 3. 5, 4. 7. 2 . . . Summary This article describes the security and cumulative update for 3 5, 4 7 2 and 4 8 for Windows 10, version 1809 and Windows Server 2019 Security Improvements There are no new security improvements in this release This update is cumulative and contains all previously released security improvements Quality and Reliability Improvements For a list of improvements that were released with
October 14, 2025-KB5066746 Cumulative Update for . NET Framework 3. 5, 4. . . . Summary This article describes the security and cumulative update for 3 5, 4 8 and 4 8 1 for Windows 10 Version 21H2 Security Improvements CVE-2025-21176 - NET Framework Remote Code Execution vulnerability This security update addresses a remote code execution vulnerability detailed in CVE-2025-21176 Quality and Reliability Improvements For a list of improvements that were released with
Update 4. 0. 3 for Microsoft . NET Framework 4 – Runtime Update Introduction Update 4 0 3 for Microsoft NET Framework 4 is now available This update includes a set of new features and fixes some bugs, based on top customer requests and the NET Framework scenarios Notes This update release updates only the runtime files for the Microsoft NET Framework 4 For more information about the details of this update, see the "More Information" section This
October 14, 2025-KB5066136 Cumulative Update for . NET Framework 4. 8 for . . . The October 14, 2025 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-2025-55248 - NET
October 14, 2025-KB5066743 Cumulative Update for . NET Framework 3. 5, 4. . . . Summary This article describes the security and cumulative update for 3 5, 4 8 and 4 8 1 for Windows Server 2022 Security Improvements CVE-2025-21176 - NET Framework Remote Code Execution vulnerability This security update addresses a remote code execution vulnerability detailed in CVE-2025-21176 Quality and Reliability Improvements For a list of improvements that were released with this
October 14, 2025-KB5066131 Cumulative Update for . NET Framework 3. 5 and . . . The October 14, 2025 update for Windows 11, version 24H2 and Microsoft server operating system version 24H2 includes security and cumulative reliability improvements in NET Framework 3 5 and 4 8 1 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