High 7.8Known exploited (CISA KEV)Published Jul 14, 2020

CVE-2020-1147A 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, Shar…

Updated under an hour ago (Oct 27, 2026, 12:30 AM ET)

Does this affect you?

It affects Microsoft SharePoint Enterprise Server and 59 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by May 3, 2022. Treat that date as your deadline.

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Every CVE for Microsoft SharePoint Enterprise Server

Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Added to CISA KEV Nov 3, 2021; federal remediation due May 3, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 93.97% (percentile 100)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Microsoft Microsoft SharePoint Enterprise Server microsoft:sharepoint_enterprise_server (from the name)	2016; 2013 Service Pack 1	CNA record
Microsoft Microsoft SharePoint Server microsoft:sharepoint_server (from the name)	2019; 2010 Service Pack 2	CNA record
Microsoft Microsoft Visual Studio 2019 microsoft:visual_studio_2019 (from the name)	16.0	CNA record
Microsoft Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5) microsoft:visual_studio_2019_version_16.6_includes_16.0_16.5 (from the name)	unspecified	CNA record
Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) microsoft:visual_studio_2017_version_15.9_includes_15.0_15.8 (from the name)	unspecified	CNA record
Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) microsoft:visual_studio_2019_version_16.4_includes_16.0_16.3 (from the name)	unspecified	CNA record
Microsoft .NET Core microsoft:net_core (from the name)	2.1; 3.1	CNA record
Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 microsoft:net_framework_4.6_4.6.1_4.6.2_4.7_4.7.1_4.7.2 (from the name)	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 (Server Core installation); Windows Server 2012; and 3 more ranges	CNA record
Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems microsoft:net_framework_4.8_on_windows_10_version_1803_for_32_bit_systems (from the name)	unspecified	CNA record
Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems microsoft:net_framework_4.8_on_windows_10_version_1803_for_x64_based_systems (from the name)	unspecified	CNA record
1–10 of 60

References

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147	x-refsource-misc, patch, vendor-advisory
http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html	x-refsource-misc, exploit, third-party-advisory, vdb-entry
http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html	x-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.exploitalert.com/view-details.html?id=35992	x-refsource-misc, exploit, third-party-advisory
http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html	x-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.