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Findings

CVE-2020-1147

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

Published Jul 14, 2020 · updated Jun 16, 2026 · microsoft .net core

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.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 14, 2020 · Catalog

    Detected

    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.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Apply updates per vendor instructions.

CISA due date May 3, 2022

Affected

  • cpe microsoft/.net core2.1
  • cpe microsoft/.net core3.1
  • cpe microsoft/.net framework2.0
  • cpe microsoft/.net framework3.0
  • cpe microsoft/.net framework3.5
  • cpe microsoft/.net framework4.6.2
  • cpe microsoft/.net framework4.7
  • vendor Microsoft .NET Framework, SharePoint, Visual Studioversion unspecified

Sources

  • CISA KEVCVE-2020-1147

    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.

    cisa.gov
  • CVE.orgCVE-2020-1147

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2020-1147

    30-day exploitation probability 94.0%

    first.org
  • Exploit Database48747

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit Database50151

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit Modulesexploit_windows/http/sharepoint_data_deserialization

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2020-1147

    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'.

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm Securityhttp://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm Securityhttp://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References