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[ CVE-2020-1147 · Published 14 Jul 2020 ]

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

Exploited · CISA KEV CVSS 7.8 EPSS 94%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
  • EPSS: 94% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official 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'.

CISA: 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

[ References ]References