Description
A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server | 2016, 2013 Service Pack 1 | — |
| Microsoft | Microsoft SharePoint Server | 2019, 2010 Service Pack 2 | — |
| Microsoft | Microsoft Visual Studio 2019 | 16.0 | — |
| Microsoft | Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5) | unspecified | — |
| Microsoft | Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | unspecified | — |
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | unspecified | — |
| Microsoft | .NET Core | 2.1, 3.1 | — |
| Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 | Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows RT 8.1, Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (S… | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows RT 8.1 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) | 1903 | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | unspecified | — |
| 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 | unspecified | — |
| 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 | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 | unspecified | — |
| 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) | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 4.6 | Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2 | — |
| Microsoft | Microsoft .NET Framework 2.0 | Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | — |
| Microsoft | Microsoft .NET Framework 3.0 | Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | — |
| Microsoft | Microsoft .NET Framework 3.5 | Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) | — |
| Microsoft | Microsoft .NET Framework 3.5.1 | Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 | — |
| Microsoft | Microsoft .NET Framework 4.5.2 | Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows RT 8.1, Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2, Windows Se… | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation) | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems | unspecified | — |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems | unspecified | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | dotnet +2 | 2.1.516-1.el8_2 | RHSA-2020:2954, RHSA-2020:2938 |
| RHEL 8 | dotnet-host +6 | 3.1.6-1.el8_2 | RHSA-2020:2954 |
| RHEL 8 | dotnet-runtime-2.1 +1 | 2.1.20-1.el8_2 | RHSA-2020:2938 |
| RHEL 8 | dotnet3.1 +3 | 3.1.106-1.el8_2 | RHSA-2020:2954 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Dotnet 3 | rh-dotnet31-dotnet +3 | 3.1.106-1.el7 | RHSA-2020:2939 |
| Red Hat Rhel Dotnet 3 | rh-dotnet31-dotnet-host +6 | 3.1.6-1.el7 | RHSA-2020:2939 |
| Red Hat Rhel Dotnet 2 | rh-dotnet21 +1 | 2.1-19.el7 | RHSA-2020:2937 |
| Red Hat Rhel Dotnet 2 | rh-dotnet21-dotnet +2 | 2.1.516-1.el7 | RHSA-2020:2937 |
| Red Hat Rhel Dotnet 2 | rh-dotnet21-dotnet-host +1 | 2.1.20-1.el7 | RHSA-2020:2937 |
| RHEL 8.1 EUS | dotnet +2 | 2.1.516-1.el8_1 | RHSA-2020:2988 |
| RHEL 8.1 EUS | dotnet-runtime-2.1 +1 | 2.1.20-1.el8_1 | RHSA-2020:2988 |
| RHEL 8.0 E4S | dotnet +2 | 2.1.516-1.el8_0 | RHSA-2020:2989 |
| RHEL 8.0 E4S | dotnet-host +2 | 2.1.20-1.el8_0 | RHSA-2020:2989 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | dotnet +3 | 3.1.106-1.0.1.el8_2 | ELSA-2020-2954 |
| Oracle Linux 8 | dotnet-host +6 | 3.1.6-1.0.1.el8_2 | ELSA-2020-2954 |
| Oracle Linux 8 | dotnet-runtime-2.1 +1 | 2.1.20-1.el8_2 | ELSA-2020-2938 |
| Oracle Linux 8 | dotnet-sdk-2.1 +1 | 2.1.516-1.el8_2 | ELSA-2020-2938 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
SharePoint DataSet / DataTable Deserialization
exploit/windows/http/sharepoint_data_deserialization
Exploit-DB 2
- Microsoft SharePoint Server 2019 - Remote Code Execution (2) EDB-50151 · webapps · Jul 23, 2021
- Microsoft SharePoint Server 2019 - Remote Code Execution EDB-48747 · webapps · Aug 17, 2020
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
Advisories 8
- RHSA-2020:2988 Red Hat Security Advisory: .NET Core security and bugfix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2989 Red Hat Security Advisory: .NET Core security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2939 Red Hat Security Advisory: .NET Core 3.1 on Red Hat Enterprise Linux security and bugfix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2954 Red Hat Security Advisory: .NET Core 3.1 security and bugfix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2938 Red Hat Security Advisory: .NET Core security and bugfix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2937 Red Hat Security Advisory: .NET Core 2.1 on Red Hat Enterprise Linux security and bugfix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- ELSA-2020-2954 Critical: .NET Core 3.1 security and bugfix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 17, 2020
- ELSA-2020-2938 Critical: .NET Core security and bugfix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 16, 2020
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147
- http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html
- http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
- https://www.exploitalert.com/view-details.html?id=35992
- http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html