CVE-2020-0646

Known Exploited Public Exploit

Description

A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 92.77% Top 5%
KEV Since 
Vendor Advisory microsoft.com
Affected: Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
Affected: Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2016
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows RT 8.1
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012 R2
Affected: Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 4.6
Affected: Microsoft Microsoft .NET Framework 3.0
Affected: Microsoft Microsoft .NET Framework 3.5
Affected: Microsoft Microsoft .NET Framework 3.5.1
Affected: Microsoft Microsoft .NET Framework 4.5.2
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation)
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for x64-based Systems
Affected: Microsoft 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
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems
Affected: Microsoft 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
Affected: Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646 patch vendor advisory
http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-0646?
CVE-2020-0646 has been scored as a critical severity vulnerability.
How to fix CVE-2020-0646?
To fix CVE-2020-0646, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-0646 being actively exploited in the wild?
It is confirmed that CVE-2020-0646 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~93% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-0646?
CVE-2020-0646 affects Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems, Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems, Microsoft Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation), Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems, Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems, Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems, Microsoft Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems, Microsoft Microsoft .NET Framework 4.8 on Windows Server 2016, Microsoft Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation), Microsoft Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1, Microsoft Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1, Microsoft Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems, Microsoft Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems, Microsoft Microsoft .NET Framework 4.8 on Windows RT 8.1, Microsoft Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1, Microsoft Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012, Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation), Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012 R2, Microsoft Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation), Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation), Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation), Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019, Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation), Microsoft Microsoft .NET Framework 4.6, Microsoft Microsoft .NET Framework 3.0, Microsoft Microsoft .NET Framework 3.5, Microsoft Microsoft .NET Framework 3.5.1, Microsoft Microsoft .NET Framework 4.5.2, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation), Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation), Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for 32-bit Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems, Microsoft Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems, Microsoft 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 Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for x64-based Systems, Microsoft 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 Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems, Microsoft 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 Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016.
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