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CVE-2020-0646

Severity
CRITICAL
CVSS
9.8
EPSS
0.99222
Risk score
59.73
CISA KEV
Yes
PoC
No
Published
2020-01-14
Modified
2025-10-21
First seen
2026-08-07
Aliases
EUVD-2020-2140, GHSA-4W3V-83V8-MG94
Products
Microsoft:.NET Framework, Microsoft:Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, 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 unspecified, 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 unspecified, 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) unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation) unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 unspecified, Microsoft:Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation) unspecified, Microsoft:Microsoft .NET Framework 3.5 Windows 10 Version 1607 for 32-bit Systems, Microsoft:Microsoft .NET Framework 3.5 Windows 8.1 for 32-bit systems, Microsoft:Microsoft .NET Framework 3.5 Windows 8.1 for x64-based systems, Microsoft:Microsoft .NET Framework 3.5 Windows Server 2012 (Server Core installation), Microsoft:Microsoft .NET Framework 3.5 Windows Server 2012 R2 (Server Core installation), Microsoft:Microsoft .NET Framework 3.5.1 Windows 7 for 32-bit Systems Service Pack 1, Microsoft:Microsoft .NET Framework 3.5.1 Windows 7 for x64-based Systems Service Pack 1, Microsoft:Microsoft .NET Framework 3.5.1 Windows Server 2008 R2 for x64-based Systems Service Pack 1, Microsoft:Microsoft .NET Framework 3.5.1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Microsoft:Microsoft .NET Framework 4.5.2 Windows 7 for x64-based Systems Service Pack 1, Microsoft:Microsoft .NET Framework 4.5.2 Windows RT 8.1, Microsoft:Microsoft .NET Framework 4.5.2 Windows Server 2008 for 32-bit Systems Service Pack 2, Microsoft:Microsoft .NET Framework 4.5.2 Windows Server 2012, Microsoft:Microsoft .NET Framework 4.5.2 Windows Server 2012 (Server Core installation), Microsoft:Microsoft .NET Framework 4.5.2 Windows Server 2012 R2, Microsoft:Microsoft .NET Framework 4.5.2 Windows Server 2012 R2 (Server Core installation), Microsoft:Microsoft .NET Framework 4.6 Windows Server 2008 for x64-based Systems Service Pack 2, Microsoft:Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Windows 10 Version 1607 for 32-bit Systems, Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows 7 for 32-bit Systems Service Pack 1, Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows 7 for x64-based Systems Service Pack 1, Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows 8.1 for x64-based systems, Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows RT 8.1, Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows Server 2008 R2 for x64-based Systems Service Pack 1, Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Microsoft:Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows Server 2012 R2, Microsoft:Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems unspecified, Microsoft:Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems unspecified, Microsoft:Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) unspecified, Microsoft:Microsoft .NET Framework 4.8 on Windows Server 2012 R2 unspecified, Microsoft:Microsoft .NET Framework 4.8 on Windows Server 2016 unspecified
Sources
cisa.gov CVE-2020-0646
euvd EUVD-2020-2140

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'.

References