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'.

Affected

Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 · Microsoft .NET Framework 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

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

99.22% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2021-11-03

Nuclei

critical · CWE-91

Published

2020-01-14

Updated

2025-10-21

Proof-of-concept exploits (1)

• http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/code/cves/2020/CVE-2020-0646.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_workflow…

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/48275

Security advisories

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646

References

• CVE Record
• NVD entry