CVE-2020-1147

Confirmed PUBLISHED

A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source...

Microsoft · Microsoft SharePoint Enterprise Server, Microsoft SharePoint Server, Microsoft Visual Studio 2019, Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5), Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8), Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3), .NET Core, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, 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 x64-based Systems, Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation), Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows Server 2016, Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation), Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1, Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1, Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems, Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems, Microsoft .NET Framework 4.8 on Windows RT 8.1, Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1, Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Microsoft .NET Framework 4.8 on Windows Server 2012, Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation), Microsoft .NET Framework 4.8 on Windows Server 2012 R2, Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation), Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems, Microsoft .NET Framework 4.6, Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems
Exploited in the wild PoC available

Recommended Action

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Confidence
Confirmed
Exploitation Status
Exploited in the wild
Observed in Sensors
No
Attempts (30d)
Unique Attacker IPs
CISA KEV
In CISA KEV
CVSS / EPSS
7.8 High

At a Glance

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'.

microsoft metasploit dotnet cisa windows
CVE Published
Jul 14, 2020
Exploitation Reported
Nov 03, 2021
CVSS
7.8 High
EPSS
Low complexity Unauthenticated

Affected Versions

103 version rows · page 2 of 5

Vendor Product Version Status
Microsoft
Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2016

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows RT 8.1

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2012

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2012 R2

unspecified

Affected
Microsoft
Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems

unspecified

Affected
Microsoft
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems

unspecified

Affected

CVE References

Recommended Actions

  • Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
  • Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
  • Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.