# CVE-2018-8421: .NET Framework Remote Code Execution Vulnerability CVE-2018-8421 is fixed in 69 products on 1 platform, first by KB4457131, released September 11, 2018. It is not reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2018-8421 - Priority: Urgent - CVSS: n/a (Critical) - EPSS: 0.2908 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Sep 12, 2018 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8421 ## Description

A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system.

To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application.

The security update addresses the vulnerability by correcting how .NET Framework processes input.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457054](https://patchblox.com/security/data/fix/microsoft/kb4457054.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457043](https://patchblox.com/security/data/fix/microsoft/kb4457043.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4457054](https://patchblox.com/security/data/fix/microsoft/kb4457054.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4457043](https://patchblox.com/security/data/fix/microsoft/kb4457043.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457054](https://patchblox.com/security/data/fix/microsoft/kb4457054.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457043](https://patchblox.com/security/data/fix/microsoft/kb4457043.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457054](https://patchblox.com/security/data/fix/microsoft/kb4457054.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457043](https://patchblox.com/security/data/fix/microsoft/kb4457043.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4457054](https://patchblox.com/security/data/fix/microsoft/kb4457054.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4457043](https://patchblox.com/security/data/fix/microsoft/kb4457043.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457054](https://patchblox.com/security/data/fix/microsoft/kb4457054.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457043](https://patchblox.com/security/data/fix/microsoft/kb4457043.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems | 15063.1324 | [KB4457138](https://patchblox.com/security/data/fix/microsoft/kb4457138.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems | 15063.1324 | [KB4457138](https://patchblox.com/security/data/fix/microsoft/kb4457138.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems | 16299.665 | [KB4457142](https://patchblox.com/security/data/fix/microsoft/kb4457142.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems | 16299.665 | [KB4457142](https://patchblox.com/security/data/fix/microsoft/kb4457142.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems | 17134.285 | [KB4457128](https://patchblox.com/security/data/fix/microsoft/kb4457128.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems | 17134.285 | [KB4457128](https://patchblox.com/security/data/fix/microsoft/kb4457128.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems | 10240.17976 | [KB4457132](https://patchblox.com/security/data/fix/microsoft/kb4457132.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems | 10240.17976 | [KB4457132](https://patchblox.com/security/data/fix/microsoft/kb4457132.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | | [KB4457045](https://patchblox.com/security/data/fix/microsoft/kb4457045.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | | [KB4457056](https://patchblox.com/security/data/fix/microsoft/kb4457056.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | | [KB4457045](https://patchblox.com/security/data/fix/microsoft/kb4457045.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | | [KB4457056](https://patchblox.com/security/data/fix/microsoft/kb4457056.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 | | [KB4457053](https://patchblox.com/security/data/fix/microsoft/kb4457053.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 | | [KB4457042](https://patchblox.com/security/data/fix/microsoft/kb4457042.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | | [KB4457053](https://patchblox.com/security/data/fix/microsoft/kb4457053.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | | [KB4457042](https://patchblox.com/security/data/fix/microsoft/kb4457042.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | | [KB4457045](https://patchblox.com/security/data/fix/microsoft/kb4457045.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | | [KB4457056](https://patchblox.com/security/data/fix/microsoft/kb4457056.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | | [KB4457045](https://patchblox.com/security/data/fix/microsoft/kb4457045.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | | [KB4457056](https://patchblox.com/security/data/fix/microsoft/kb4457056.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2016 | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation) | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server, version 1709 (Server Core Installation) | 16299.665 | [KB4457142](https://patchblox.com/security/data/fix/microsoft/kb4457142.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation) | 17134.285 | [KB4457128](https://patchblox.com/security/data/fix/microsoft/kb4457128.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4457044](https://patchblox.com/security/data/fix/microsoft/kb4457044.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4457055](https://patchblox.com/security/data/fix/microsoft/kb4457055.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4457044](https://patchblox.com/security/data/fix/microsoft/kb4457044.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4457055](https://patchblox.com/security/data/fix/microsoft/kb4457055.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4457044](https://patchblox.com/security/data/fix/microsoft/kb4457044.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4457055](https://patchblox.com/security/data/fix/microsoft/kb4457055.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4457044](https://patchblox.com/security/data/fix/microsoft/kb4457044.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4457055](https://patchblox.com/security/data/fix/microsoft/kb4457055.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4457044](https://patchblox.com/security/data/fix/microsoft/kb4457044.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4457055](https://patchblox.com/security/data/fix/microsoft/kb4457055.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4457038](https://patchblox.com/security/data/fix/microsoft/kb4457038.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4457030](https://patchblox.com/security/data/fix/microsoft/kb4457030.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4457038](https://patchblox.com/security/data/fix/microsoft/kb4457038.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4457030](https://patchblox.com/security/data/fix/microsoft/kb4457030.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | | [KB4457028](https://patchblox.com/security/data/fix/microsoft/kb4457028.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | | [KB4457036](https://patchblox.com/security/data/fix/microsoft/kb4457036.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | | [KB4457028](https://patchblox.com/security/data/fix/microsoft/kb4457028.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | | [KB4457036](https://patchblox.com/security/data/fix/microsoft/kb4457036.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows RT 8.1 | | [KB4457036](https://patchblox.com/security/data/fix/microsoft/kb4457036.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4457038](https://patchblox.com/security/data/fix/microsoft/kb4457038.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4457030](https://patchblox.com/security/data/fix/microsoft/kb4457030.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4457038](https://patchblox.com/security/data/fix/microsoft/kb4457038.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4457030](https://patchblox.com/security/data/fix/microsoft/kb4457030.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457038](https://patchblox.com/security/data/fix/microsoft/kb4457038.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457030](https://patchblox.com/security/data/fix/microsoft/kb4457030.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457038](https://patchblox.com/security/data/fix/microsoft/kb4457038.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457030](https://patchblox.com/security/data/fix/microsoft/kb4457030.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 | | [KB4457029](https://patchblox.com/security/data/fix/microsoft/kb4457029.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 | | [KB4457037](https://patchblox.com/security/data/fix/microsoft/kb4457037.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | | [KB4457029](https://patchblox.com/security/data/fix/microsoft/kb4457029.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | | [KB4457037](https://patchblox.com/security/data/fix/microsoft/kb4457037.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | | [KB4457028](https://patchblox.com/security/data/fix/microsoft/kb4457028.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | | [KB4457036](https://patchblox.com/security/data/fix/microsoft/kb4457036.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4457028](https://patchblox.com/security/data/fix/microsoft/kb4457028.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4457036](https://patchblox.com/security/data/fix/microsoft/kb4457036.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457035](https://patchblox.com/security/data/fix/microsoft/kb4457035.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4457027](https://patchblox.com/security/data/fix/microsoft/kb4457027.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457035](https://patchblox.com/security/data/fix/microsoft/kb4457035.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4457027](https://patchblox.com/security/data/fix/microsoft/kb4457027.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation) | 14393.2485 | [KB4457131](https://patchblox.com/security/data/fix/microsoft/kb4457131.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4457035](https://patchblox.com/security/data/fix/microsoft/kb4457035.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4457027](https://patchblox.com/security/data/fix/microsoft/kb4457027.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4457035](https://patchblox.com/security/data/fix/microsoft/kb4457035.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4457027](https://patchblox.com/security/data/fix/microsoft/kb4457027.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | | [KB4457034](https://patchblox.com/security/data/fix/microsoft/kb4457034.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | | [KB4457026](https://patchblox.com/security/data/fix/microsoft/kb4457026.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | | [KB4457034](https://patchblox.com/security/data/fix/microsoft/kb4457034.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | | [KB4457026](https://patchblox.com/security/data/fix/microsoft/kb4457026.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1 | | [KB4457034](https://patchblox.com/security/data/fix/microsoft/kb4457034.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4457035](https://patchblox.com/security/data/fix/microsoft/kb4457035.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4457027](https://patchblox.com/security/data/fix/microsoft/kb4457027.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4457035](https://patchblox.com/security/data/fix/microsoft/kb4457035.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4457027](https://patchblox.com/security/data/fix/microsoft/kb4457027.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB4457025](https://patchblox.com/security/data/fix/microsoft/kb4457025.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB4457033](https://patchblox.com/security/data/fix/microsoft/kb4457033.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | | [KB4457025](https://patchblox.com/security/data/fix/microsoft/kb4457025.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | | [KB4457033](https://patchblox.com/security/data/fix/microsoft/kb4457033.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | | [KB4457034](https://patchblox.com/security/data/fix/microsoft/kb4457034.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | | [KB4457026](https://patchblox.com/security/data/fix/microsoft/kb4457026.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4457034](https://patchblox.com/security/data/fix/microsoft/kb4457034.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4457026](https://patchblox.com/security/data/fix/microsoft/kb4457026.md) | Sep 12, 2018 | | Microsoft | Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems | 16299.665 | [KB4457142](https://patchblox.com/security/data/fix/microsoft/kb4457142.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems | 16299.665 | [KB4457142](https://patchblox.com/security/data/fix/microsoft/kb4457142.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7.1/4.7.2 on Windows Server, version 1709 (Server Core Installation) | 16299.665 | [KB4457142](https://patchblox.com/security/data/fix/microsoft/kb4457142.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for 32-bit Systems | 17134.285 | [KB4457128](https://patchblox.com/security/data/fix/microsoft/kb4457128.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for x64-based Systems | 17134.285 | [KB4457128](https://patchblox.com/security/data/fix/microsoft/kb4457128.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7.2 on Windows Server, version 1803 (Server Core Installation) | 17134.285 | [KB4457128](https://patchblox.com/security/data/fix/microsoft/kb4457128.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for 32-bit Systems | 15063.1324 | [KB4457138](https://patchblox.com/security/data/fix/microsoft/kb4457138.md) | Sep 11, 2018 | | Microsoft | Microsoft .NET Framework 4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for x64-based Systems | 15063.1324 | [KB4457138](https://patchblox.com/security/data/fix/microsoft/kb4457138.md) | Sep 11, 2018 | --- Data as of 2026-11-07T18:46:35Z UTC. 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