# CVE-2020-0646

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

- Page: https://www.vulneraibility.com/cve/CVE-2020-0646
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2022-05-03
- EPSS: 99.22% (percentile 99.9)
- Public exploit code: 1 on Exploit-DB · 1 Metasploit module (first 2020-03-31)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2025-02-07)
- Weakness: CWE-91
- Published: 2020-01-14

## Affected versions

- Microsoft Microsoft .NET Framework 3.0: affected Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2; Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2; Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft Microsoft .NET Framework 3.5: affected Windows 10 Version 1607 for 32-bit Systems; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation)
- Microsoft Microsoft .NET Framework 3.5.1: affected Windows 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- Microsoft Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation): affected 1903
- Microsoft Microsoft .NET Framework 4.5.2: affected Windows 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows RT 8.1; Windows Server 2008 for 32-bit Systems Service Pack 2; Windows Server 2008 for x64-based Systems Service Pack 2; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation); Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation)
- Microsoft Microsoft .NET Framework 4.6: affected Windows Server 2008 for 32-bit Systems Service Pack 2; 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: affected 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: affected Windows 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows RT 8.1; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation); Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation)

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646
- [other] http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0646

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.