Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2020-1147

Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability

HighExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run .NET Framework, SharePoint, Visual Studio, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by May 3, 2022.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

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'.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsSource
.NET FrameworkMicrosoft2.0; 3.0; 3.5; 4.6.2; 4.7; 4.7.1NVD
.NET Framework, SharePoint, Visual StudioMicrosoft—KEV
SharePoint ServerMicrosoft2010; 2019NVD

Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2020-1147 scored CVSS 7.8: Microsoft .NET Framework, SharePoint, Visual Studio, Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability

    CISA lists this as exploited in the wild. Unpatched .NET Framework, SharePoint, Visual Studio systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

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

    An official fix is now available for Microsoft .NET Framework, SharePoint, Visual Studio. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2020-1147
  • packetstormsecurity.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 http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
  • portal.msrc.microsoft.com https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147
  • exploitalert.com https://www.exploitalert.com/view-details.html?id=35992
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147