# CVE-2024-21409: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability CVE-2024-21409 is fixed in 81 products on 3 platforms, first by PowerShell Preview 7.5.0.1, released January 18, 2024. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2024-21409 - Priority: High - CVSS: 7.3 (Important) - EPSS: 0.0251 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Apr 9, 2024 - Weakness: Use After Free - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21409 ## Description .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | .NET 6.0 | | [KB5037336](https://patchblox.com/security/data/fix/microsoft/kb5037336.md) | Apr 9, 2024 | | Microsoft | .NET 7.0 | | [KB5037337](https://patchblox.com/security/data/fix/microsoft/kb5037337.md) | Apr 9, 2024 | | Microsoft | .NET 8.0 | | [KB5037338](https://patchblox.com/security/data/fix/microsoft/kb5037338.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 14393.6897 | [KB5036899](https://patchblox.com/security/data/fix/microsoft/kb5036899.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems | 14393.6897 | [KB5036899](https://patchblox.com/security/data/fix/microsoft/kb5036899.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 | 14393.6897 | [KB5036899](https://patchblox.com/security/data/fix/microsoft/kb5036899.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation) | 14393.6897 | [KB5036899](https://patchblox.com/security/data/fix/microsoft/kb5036899.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1607 for 32-bit Systems | | [KB5036609](https://patchblox.com/security/data/fix/microsoft/kb5036609.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1607 for x64-based Systems | | [KB5036609](https://patchblox.com/security/data/fix/microsoft/kb5036609.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | | [KB5037035](https://patchblox.com/security/data/fix/microsoft/kb5037035.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | | [KB5037035](https://patchblox.com/security/data/fix/microsoft/kb5037035.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | | [KB5037035](https://patchblox.com/security/data/fix/microsoft/kb5037035.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | | [KB5037036](https://patchblox.com/security/data/fix/microsoft/kb5037036.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | | [KB5037036](https://patchblox.com/security/data/fix/microsoft/kb5037036.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | | [KB5037036](https://patchblox.com/security/data/fix/microsoft/kb5037036.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for ARM64-based Systems | | [KB5037037](https://patchblox.com/security/data/fix/microsoft/kb5037037.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for x64-based Systems | | [KB5037037](https://patchblox.com/security/data/fix/microsoft/kb5037037.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2016 | | [KB5036609](https://patchblox.com/security/data/fix/microsoft/kb5036609.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2016 (Server Core installation) | | [KB5036609](https://patchblox.com/security/data/fix/microsoft/kb5036609.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | | [KB5037034](https://patchblox.com/security/data/fix/microsoft/kb5037034.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | | [KB5037033](https://patchblox.com/security/data/fix/microsoft/kb5037033.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | | [KB5037033](https://patchblox.com/security/data/fix/microsoft/kb5037033.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems | | [KB5037035](https://patchblox.com/security/data/fix/microsoft/kb5037035.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | | [KB5037035](https://patchblox.com/security/data/fix/microsoft/kb5037035.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems | | [KB5037035](https://patchblox.com/security/data/fix/microsoft/kb5037035.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems | | [KB5037036](https://patchblox.com/security/data/fix/microsoft/kb5037036.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | | [KB5037036](https://patchblox.com/security/data/fix/microsoft/kb5037036.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | | [KB5037036](https://patchblox.com/security/data/fix/microsoft/kb5037036.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for ARM64-based Systems | | [KB5036620](https://patchblox.com/security/data/fix/microsoft/kb5036620.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for x64-based Systems | | [KB5036620](https://patchblox.com/security/data/fix/microsoft/kb5036620.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems | | [KB5036620](https://patchblox.com/security/data/fix/microsoft/kb5036620.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | | [KB5036620](https://patchblox.com/security/data/fix/microsoft/kb5036620.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for ARM64-based Systems | | [KB5037037](https://patchblox.com/security/data/fix/microsoft/kb5037037.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for x64-based Systems | | [KB5037037](https://patchblox.com/security/data/fix/microsoft/kb5037037.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | | [KB5037033](https://patchblox.com/security/data/fix/microsoft/kb5037033.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) | | [KB5037033](https://patchblox.com/security/data/fix/microsoft/kb5037033.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB5037128](https://patchblox.com/security/data/fix/microsoft/kb5037128.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB5037041](https://patchblox.com/security/data/fix/microsoft/kb5037041.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB5037128](https://patchblox.com/security/data/fix/microsoft/kb5037128.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB5037041](https://patchblox.com/security/data/fix/microsoft/kb5037041.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB5037128](https://patchblox.com/security/data/fix/microsoft/kb5037128.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB5037041](https://patchblox.com/security/data/fix/microsoft/kb5037041.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB5037128](https://patchblox.com/security/data/fix/microsoft/kb5037128.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2 on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB5037041](https://patchblox.com/security/data/fix/microsoft/kb5037041.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5037127](https://patchblox.com/security/data/fix/microsoft/kb5037127.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5037038](https://patchblox.com/security/data/fix/microsoft/kb5037038.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5037127](https://patchblox.com/security/data/fix/microsoft/kb5037127.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5037038](https://patchblox.com/security/data/fix/microsoft/kb5037038.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB5037039](https://patchblox.com/security/data/fix/microsoft/kb5037039.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | | [KB5037039](https://patchblox.com/security/data/fix/microsoft/kb5037039.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | | [KB5037040](https://patchblox.com/security/data/fix/microsoft/kb5037040.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | | [KB5037040](https://patchblox.com/security/data/fix/microsoft/kb5037040.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5037127](https://patchblox.com/security/data/fix/microsoft/kb5037127.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5037127](https://patchblox.com/security/data/fix/microsoft/kb5037127.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | | [KB5037039](https://patchblox.com/security/data/fix/microsoft/kb5037039.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | | [KB5037039](https://patchblox.com/security/data/fix/microsoft/kb5037039.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | | [KB5037040](https://patchblox.com/security/data/fix/microsoft/kb5037040.md) | Apr 9, 2024 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | | [KB5037040](https://patchblox.com/security/data/fix/microsoft/kb5037040.md) | Apr 9, 2024 | | Windows apps | PowerShell | 7.4.2.0 | [PowerShell 7.4.2.0](https://patchblox.com/security/data/fix/windows-app/microsoft.powershell-7.4.2.0.md) | Apr 11, 2024 | | Windows apps | PowerShell Preview | 7.5.0.1 | [PowerShell Preview 7.5.0.1](https://patchblox.com/security/data/fix/windows-app/microsoft.powershell.preview-7.5.0.1.md) | Jan 18, 2024 | | Linux | aspnetcore-runtime-6.0 amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | aspnetcore-targeting-pack-6.0 amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-apphost-pack-6.0 amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-apphost-pack-6.0-debuginfo amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-host amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-host-debuginfo amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-hostfxr-6.0 amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-hostfxr-6.0-debuginfo amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-runtime-6.0 amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-runtime-6.0-debuginfo amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-sdk-6.0 amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-sdk-6.0-debuginfo amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-sdk-6.0-source-built-artifacts amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-targeting-pack-6.0 amzn 2023 | 6.0.29-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet-templates-6.0 amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet6.0-debuginfo amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | dotnet6.0-debugsource amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | | Linux | netstandard-targeting-pack-2.1 amzn 2023 | 6.0.129-1.amzn2023.0.1 | [ALAS2023-2024-597](https://patchblox.com/security/data/fix/linux/alas2023-2024-597.md) | Apr 25, 2024 | --- Data as of 2026-11-08T13:06:02Z UTC. 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