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CVE-2020-0646

CriticalPublished

Microsoft .NET Framework Remote Code Execution Vulnerability

Published: Jan 14, 2020
Updated: Oct 21, 2025
Assigning CNA: microsoft
Evidence observed: Mar 31, 2020

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

99.2%

High · next 30 days

Percentile: 99.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

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

Sources

SharePoint Workflows - XOML Injection (Metasploit)Exploit
Metasploit · windows · Mar 31, 2020

Responsible use

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