# CVE-2020-1147: Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability > CVE-2020-1147: Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV. Canonical: https://rewindex.com/cve/CVE-2020-1147 Last updated: 2025-10-21T23:35:39Z - Published: 2020-07-14 22:54 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: microsoft - CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS: 94.0%, 100th percentile (scored 2026-10-25) - CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown ## Description 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'. ## CISA required action Apply updates per vendor instructions. ## Affected vendors and products - Microsoft: Microsoft .NET Framework 2.0 - Microsoft: Microsoft .NET Framework 3.0 - Microsoft: Microsoft .NET Framework 3.5 - Microsoft: Microsoft .NET Framework 3.5.1 - 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 - 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 - Microsoft: Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 - 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) - Microsoft: Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) - Microsoft: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation) - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation) - Microsoft: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation) - Microsoft: Microsoft .NET Framework 4.5.2 - Microsoft: Microsoft .NET Framework 4.6 - Microsoft: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 - Microsoft: Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 - Microsoft: Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 - Microsoft: Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems - Microsoft: Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems - Microsoft: Microsoft .NET Framework 4.8 on Windows RT 8.1 - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2012 - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2012 R2 - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) - Microsoft: Microsoft .NET Framework 4.8 on Windows Server 2016 - Microsoft: .NET Core ## References - [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-1147) - [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2020-1147) - [http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html](http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html) - [http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html](http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html) - [http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html](http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html) - [https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147) - [https://www.exploitalert.com/view-details.html?id=35992](https://www.exploitalert.com/view-details.html?id=35992) --- _Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_ --- Canonical: https://rewindex.com/cve/CVE-2020-1147 · Markdown: https://rewindex.com/cve/CVE-2020-1147.md · JSON: https://rewindex.com/api/v1/cves/CVE-2020-1147 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:03.685Z