CVE-2020-1147: Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability

Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-deeacc4fb80c, updated 2026-11-02T23:39:54.475Z.

CISA Known Exploited Vulnerabilities

Name: Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability
Vendor: Microsoft
Product: .NET Framework, SharePoint, Visual Studio
Added to the catalog: 2021-11-03
Due date for US federal agencies: 2022-05-03
Catalog version: 2026.10.30

Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content.

Required action (CISA)

Apply updates per vendor instructions.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

https://nvd.nist.gov/vuln/detail/CVE-2020-1147

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status: Analyzed
Published: 2020-07-14T23:15:12.057
Last modified: 2026-06-17T03:00:34.930
Weaknesses: NVD-CWE-Other

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'.

Metric	Score	Severity	Vector	Scored by
CVSS 3.1	7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	[email protected] (Primary)
CVSS 3.1	7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	[email protected] (Primary)

References

http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html (Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html (Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html (Exploit, Third Party Advisory, VDB Entry)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147 (Patch, Vendor Advisory)
https://www.exploitalert.com/view-details.html?id=35992 (Exploit, Third Party Advisory)
http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html (Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html (Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html (Exploit, Third Party Advisory, VDB Entry)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147 (Patch, Vendor Advisory)
https://www.exploitalert.com/view-details.html?id=35992 (Exploit, Third Party Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:51.476Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-1147

CVE record

Assigner: microsoft
State: PUBLISHED
Published: 2020-07-14T22:54:00.000Z
Updated: 2025-10-21T23:35:39.668Z
Problem types: Remote Code Execution

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

Read on 2026-11-03T01:03:14.010Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2020/1xxx/CVE-2020-1147.json

Also known as / affected packages

GHSA-g5vf-38cp-4px9

Also known as: CVE-2020-1147. OSV.dev record, GitHub advisory.

NuGet Microsoft.NETCore.App: introduced 2.1.0, fixed 2.1.20
NuGet Microsoft.NETCore.App.Runtime.linux-arm: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.linux-arm64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.linux-musl-arm64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.linux-musl-x64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.linux-x64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.osx-x64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.rhel.6-x64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.win-arm: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.win-arm64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.win-x64: introduced 3.1.0, fixed 3.1.6
NuGet Microsoft.NETCore.App.Runtime.win-x86: introduced 3.1.0, fixed 3.1.6

Read on 2026-11-03T00:50:00.997Z under licence ghsa-cc-by-4.0@9e5f1b3c from https://api.osv.dev/v1/vulns/GHSA-g5vf-38cp-4px9

Sources and licences

CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
CC0 1.0 Universal
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
CVE Program Terms of Use ("CVE Usage" licence)
GitHub Advisory Database via OSV.dev
GHSA-g5vf-38cp-4px9: GitHub Advisory Database, https://github.com/advisories/GHSA-g5vf-38cp-4px9. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/), provided as is, without warranties. Retrieved via OSV.dev (https://osv.dev/vulnerability/GHSA-g5vf-38cp-4px9), which enriches records; fields selected and reformatted by ransomware-tracker.com.
CC BY 4.0

Cite this page

Dragons Eye Ransomware Tracker, "CVE-2020-1147: Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability",
entity page, dataset version ref-deeacc4fb80c, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2020-1147 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T03:00:34.930.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2025-10-21T23:35:39.668Z.
Underlying source: GitHub Advisory Database, GHSA-g5vf-38cp-4px9, via OSV.dev, modified 2025-10-22T19:19:28.278997Z.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.

CISA KEV index