CVE-2020-1147A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check…

7.8HighCVSS base score
95.8%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
YesKnown exploitedin CISA's KEV since 3 Nov 2021
3Public exploitsMetasploit, Nuclei and Exploit-DB

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'.

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability.

Added: 3 Nov 2021
Fix due (US federal): 3 May 2022
Used by ransomware: Not known

Apply updates per vendor instructions.

ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 3 Nov 2021.

EUVD-2022-3898 (opens in a new tab)

Public exploit

An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 2 Exploit-DB entries for it. CISA's SSVC rates its exploitation: it is being exploited.

Show the exploits3

Metasploit modules1 module

SharePoint DataSet / DataTable Deserialization (Metasploit module) (opens in a new tab)
exploit/windows/http/sharepoint_data_deserializationRank excellentdisclosed 14 Jul 2020

Exploit-DB2 entries

Microsoft SharePoint Server 2019 - Remote Code Execution (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 50151webapps, aspxpublished 23 Jul 2021Not verified
Microsoft SharePoint Server 2019 - Remote Code Execution (Exploit-DB entry) (opens in a new tab)
EDB-ID 48747webapps, aspxpublished 17 Aug 2020Not verified

Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from

Timeline

2019
4 Nov 2019
4 Nov 2019
ID reserved
By microsoft
2020
14 Jul 20208 months later
14 Jul 2020· 8 months later
Published
2021
3 Nov 202116 months later
3 Nov 2021· 16 months later
Added to CISA KEV
Known exploited in the wild
2025
21 Oct 20254 years later
21 Oct 2025· 4 years later
Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2020-1147, by who scored it
Scored by	CVSS	Score	Vector
CISA-ADPADP (enrichment)	3.1	High7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVDNVD · Analyzed	3.1	High7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (exploitation in 30 days): 95.8% · top 0.1% of all CVEs (13 Nov 2026)
CISA SSVC: Exploitation: active · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

Microsoft · Microsoft SharePoint Enterprise Server
- affected 2016
- affected 2013 Service Pack 1
Microsoft · Microsoft SharePoint Server
- affected 2019
- affected 2010 Service Pack 2
Microsoft · Microsoft Visual Studio 2019
- affected 16.0
Microsoft · Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5)
- affected unspecified
Microsoft · Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
- affected unspecified
Microsoft · Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
- affected unspecified
Microsoft · .NET Core
- affected 2.1
- affected 3.1
Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
- affected Windows 7 for 32-bit Systems Service Pack 1
- affected Windows 7 for x64-based Systems Service Pack 1
- affected Windows 8.1 for 32-bit systems
- affected Windows 8.1 for x64-based systems
- affected Windows RT 8.1
- affected Windows Server 2008 R2 for x64-based Systems Service Pack 1
- affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- affected Windows Server 2012
- affected Windows Server 2012 (Server Core installation)
- affected Windows Server 2012 R2
- affected Windows Server 2012 R2 (Server Core installation)
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows RT 8.1
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 R2
- affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)
- affected 1903
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)
- affected 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
- affected 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
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016
- affected 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)
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 4.6
- affected Windows Server 2008 for 32-bit Systems Service Pack 2
- affected Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft · Microsoft .NET Framework 2.0
- affected Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
- affected Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft · Microsoft .NET Framework 3.0
- affected Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
- affected Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft · Microsoft .NET Framework 3.5
- affected Windows 8.1 for 32-bit systems
- affected Windows 8.1 for x64-based systems
- affected Windows Server 2012
- affected Windows Server 2012 (Server Core installation)
- affected Windows Server 2012 R2
- affected Windows Server 2012 R2 (Server Core installation)
Microsoft · Microsoft .NET Framework 3.5.1
- affected Windows 7 for 32-bit Systems Service Pack 1
- affected Windows 7 for x64-based Systems Service Pack 1
- affected Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft · Microsoft .NET Framework 4.5.2
- affected Windows 7 for 32-bit Systems Service Pack 1
- affected Windows 7 for x64-based Systems Service Pack 1
- affected Windows 8.1 for 32-bit systems
- affected Windows 8.1 for x64-based systems
- affected Windows RT 8.1
- affected Windows Server 2008 for 32-bit Systems Service Pack 2
- affected Windows Server 2008 for x64-based Systems Service Pack 2
- affected Windows Server 2008 R2 for x64-based Systems Service Pack 1
- affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- affected Windows Server 2012
- affected Windows Server 2012 (Server Core installation)
- affected Windows Server 2012 R2
- affected Windows Server 2012 R2 (Server Core installation)
Microsoft · Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation)
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems
- affected unspecified
Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems
- affected unspecified

Affected packages12

From reviewed advisories of the GitHub Advisory Database.

NuGetMicrosoft.NETCore.AppGHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.linux-armGHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.linux-arm64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.linux-musl-arm64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.linux-musl-x64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.linux-x64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.osx-x64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.rhel.6-x64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.win-armGHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.win-arm64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.win-x64GHSA-g5vf-38cp-4px9 (opens in a new tab)
NuGetMicrosoft.NETCore.App.Runtime.win-x86GHSA-g5vf-38cp-4px9 (opens in a new tab)

References6

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147 (opens in a new tab)x_refsource_MISCx_transferred
http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html (opens in a new tab)x_refsource_MISCx_transferred
http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html (opens in a new tab)x_refsource_MISCx_transferred
https://www.exploitalert.com/view-details.html?id=35992 (opens in a new tab)x_refsource_MISCx_transferred
http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html (opens in a new tab)x_refsource_MISCx_transferred
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147 (opens in a new tab)government-resource

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2020-1147](https://cveledger.app/badge/CVE-2020-1147.svg)](https://cveledger.app/cve/CVE-2020-1147)

Record last updated 21 Oct 2025, 23:35 UTC.