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CVE-2020-1147

HighPublished

Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability

Published: Jul 14, 2020
Updated: Oct 21, 2025
Assigning CNA: microsoft
Evidence observed: Aug 17, 2020

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

94.0%

High · next 30 days

Percentile: 99.8%
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 in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.

Sources

Microsoft SharePoint Server 2019 - Remote Code ExecutionExploit
West Shepherd · aspx · Aug 17, 2020
Microsoft SharePoint Server 2019 - Remote Code Execution (2)Exploit
Podalirius · aspx · Jul 23, 2021

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