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CVE-2020-1147

Published: Jul 14, 2020Updated: Oct 29, 2025 Sources: CVE List NVD GHSA BDUNVD-CWE-Other
NVD MITRE
7.8CVSSHIGH
EPSS Score
94.2%
Top 0.2%
CISA KEV
Active Exploitation
Since Nov 3, 2021
Exploits
3 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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'.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

NVD-CWE-Other

Affected Products

Microsoft SharePoint Enterprise ServerMicrosoft
On-premWeb App
Enterprise Software / collaboration-groupware
Microsoft SharePoint ServerMicrosoft
On-premWeb App
Enterprise Software / collaboration-groupware
Microsoft Visual Studio 2019Microsoft
On-premDev Tool
DevTools & CI / ide-editor
Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5)Microsoft
On-prem
Operating Systems / windows
Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)Microsoft
On-premDev Tool
DevTools & CI / ide-editor
microsoftcommercialUSOperating Systems
and 101 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Nov 3, 2021
Remediation due:May 3, 2022

Required action: Apply updates per vendor instructions.

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147
portal.msrc.microsoft.com
http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html
packetstormsecurity.com
http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
packetstormsecurity.com
and 11 more references View all →

Timeline

Published
Jul 14, 2020
Added to CISA KEV
Nov 3, 2021
Last Updated
Oct 29, 2025

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