# CVE-2020-1108: .NET Core & .NET Framework Denial of Service Vulnerability CVE-2020-1108 is fixed in 104 products on 2 platforms, first by KB4556813, released May 12, 2020. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2020-1108 - Priority: High - CVSS: 7.5 (Important) - EPSS: 0.0646 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: May 13, 2020 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1108 ## Description

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication.

A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application.

The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests.

## 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 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 14393.3686 | [KB4556813](https://patchblox.com/security/data/fix/microsoft/kb4556813.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems | 14393.3686 | [KB4556813](https://patchblox.com/security/data/fix/microsoft/kb4556813.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 | 14393.3686 | [KB4556813](https://patchblox.com/security/data/fix/microsoft/kb4556813.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation) | 14393.3686 | [KB4556813](https://patchblox.com/security/data/fix/microsoft/kb4556813.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems | 10240.18575 | [KB4556826](https://patchblox.com/security/data/fix/microsoft/kb4556826.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems | 10240.18575 | [KB4556826](https://patchblox.com/security/data/fix/microsoft/kb4556826.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems | 16299.1868 | [KB4556812](https://patchblox.com/security/data/fix/microsoft/kb4556812.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems | 16299.1868 | [KB4556812](https://patchblox.com/security/data/fix/microsoft/kb4556812.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems | 16299.1868 | [KB4556812](https://patchblox.com/security/data/fix/microsoft/kb4556812.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation) | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | | [KB4556441](https://patchblox.com/security/data/fix/microsoft/kb4556441.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation) | | [KB4552931](https://patchblox.com/security/data/fix/microsoft/kb4552931.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows RT 8.1 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556406](https://patchblox.com/security/data/fix/microsoft/kb4556406.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4556402](https://patchblox.com/security/data/fix/microsoft/kb4556402.md) | May 14, 2020 | | 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 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | 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 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | 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 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | 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 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | 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 | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | 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 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | 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 | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | 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 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | 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 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | 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 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | 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 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | 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) | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | 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) | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | 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) | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | 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) | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | 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 | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | 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 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | 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) | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | 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) | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | | [KB4552926](https://patchblox.com/security/data/fix/microsoft/kb4552926.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | | [KB4552926](https://patchblox.com/security/data/fix/microsoft/kb4552926.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems | | [KB4552928](https://patchblox.com/security/data/fix/microsoft/kb4552928.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems | | [KB4552928](https://patchblox.com/security/data/fix/microsoft/kb4552928.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems | | [KB4552929](https://patchblox.com/security/data/fix/microsoft/kb4552929.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems | | [KB4552929](https://patchblox.com/security/data/fix/microsoft/kb4552929.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows RT 8.1 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4556403](https://patchblox.com/security/data/fix/microsoft/kb4556403.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4556399](https://patchblox.com/security/data/fix/microsoft/kb4556399.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | | [KB4556400](https://patchblox.com/security/data/fix/microsoft/kb4556400.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | | [KB4556404](https://patchblox.com/security/data/fix/microsoft/kb4556404.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | | [KB4556405](https://patchblox.com/security/data/fix/microsoft/kb4556405.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | | [KB4556401](https://patchblox.com/security/data/fix/microsoft/kb4556401.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 | | [KB4552926](https://patchblox.com/security/data/fix/microsoft/kb4552926.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | | [KB4552926](https://patchblox.com/security/data/fix/microsoft/kb4552926.md) | May 14, 2020 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation) | | [KB4552929](https://patchblox.com/security/data/fix/microsoft/kb4552929.md) | May 14, 2020 | | Linux | aspnetcore-runtime-3.1 RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | aspnetcore-runtime-3.1 ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | aspnetcore-targeting-pack-3.1 RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | aspnetcore-targeting-pack-3.1 ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet RHEL 8 | 0:3.1.105-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet ol 8 | 0:3.1.104-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-apphost-pack-3.1 RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-apphost-pack-3.1 ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-host RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-host ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-host-fxr-2.1 RHEL 8 | 0:2.1.19-1.el8_2 | [RHSA-2020:2471](https://patchblox.com/security/data/fix/linux/rhsa-2020-2471.md) | Jun 10, 2020 | | Linux | dotnet-host-fxr-2.1 ol 8 | 0:2.1.18-2.el8_2 | [ELSA-2020-2143](https://patchblox.com/security/data/fix/linux/elsa-2020-2143.md) | May 13, 2020 | | Linux | dotnet-hostfxr-3.1 RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-hostfxr-3.1 ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-runtime-2.1 RHEL 8 | 0:2.1.19-1.el8_2 | [RHSA-2020:2471](https://patchblox.com/security/data/fix/linux/rhsa-2020-2471.md) | Jun 10, 2020 | | Linux | dotnet-runtime-2.1 ol 8 | 0:2.1.18-2.el8_2 | [ELSA-2020-2143](https://patchblox.com/security/data/fix/linux/elsa-2020-2143.md) | May 13, 2020 | | Linux | dotnet-runtime-3.1 RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-runtime-3.1 ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-sdk-2.1 RHEL 8 | 0:2.1.515-1.el8_2 | [RHSA-2020:2471](https://patchblox.com/security/data/fix/linux/rhsa-2020-2471.md) | Jun 10, 2020 | | Linux | dotnet-sdk-2.1 ol 8 | 0:2.1.514-2.el8_2 | [ELSA-2020-2143](https://patchblox.com/security/data/fix/linux/elsa-2020-2143.md) | May 13, 2020 | | Linux | dotnet-sdk-2.1.5xx RHEL 8 | 0:2.1.515-1.el8_2 | [RHSA-2020:2471](https://patchblox.com/security/data/fix/linux/rhsa-2020-2471.md) | Jun 10, 2020 | | Linux | dotnet-sdk-2.1.5xx ol 8 | 0:2.1.514-2.el8_2 | [ELSA-2020-2143](https://patchblox.com/security/data/fix/linux/elsa-2020-2143.md) | May 13, 2020 | | Linux | dotnet-sdk-3.1 RHEL 8 | 0:3.1.105-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-sdk-3.1 ol 8 | 0:3.1.104-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-targeting-pack-3.1 RHEL 8 | 0:3.1.5-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-targeting-pack-3.1 ol 8 | 0:3.1.4-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | dotnet-templates-3.1 RHEL 8 | 0:3.1.105-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | dotnet-templates-3.1 ol 8 | 0:3.1.104-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | | Linux | netstandard-targeting-pack-2.1 RHEL 8 | 0:3.1.105-2.el8_2 | [RHSA-2020:2450](https://patchblox.com/security/data/fix/linux/rhsa-2020-2450.md) | Jun 9, 2020 | | Linux | netstandard-targeting-pack-2.1 ol 8 | 0:3.1.104-2.0.2.el8_2 | [ELSA-2020-2250](https://patchblox.com/security/data/fix/linux/elsa-2020-2250.md) | Jun 9, 2020 | --- Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.