Risk Letters

Exploited vulnerability

CVE-2020-1147

TLP:CLEAR

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

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.

Facts

  • Vendor: Microsoft
  • Product: .NET Framework, SharePoint, Visual Studio
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 95.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 3 November 2021
  • First known exploitation: 3 November 2021
  • CISA's deadline for US federal agencies: 3 May 2022
  • First seen by Risk Letters: 3 November 2021

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD