CVE-2020-1147
HIGHCVSS 7.8/10Actively ExploitedEPSS 94.24%
Last modified
CVE-2020-1147 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 94.24% chance of exploitation in the next 30 days.
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'.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | .Net Core | 2.1 | — |
| Microsoft | .Net Core | 3.1 | — |
| Microsoft | .Net Framework | 2.0 | Sp2 |
| Microsoft | .Net Framework | 3.0 | Sp2 |
| Microsoft | .Net Framework | 3.5 | — |
| Microsoft | .Net Framework | 4.6.2 | — |
| Microsoft | .Net Framework | 4.7 | — |
| Microsoft | .Net Framework | 4.7.1 | — |
| Microsoft | .Net Framework | 4.7.2 | — |
| Microsoft | .Net Framework | 4.6 | — |
| Microsoft | .Net Framework | 4.6.1 | — |
| Microsoft | .Net Framework | 4.8 | — |
| Microsoft | .Net Framework | 3.5.1 | — |
| Microsoft | .Net Framework | 4.5.2 | — |
| Microsoft | Sharepoint Enterprise Server | 2013 | Sp1 |
| Microsoft | Sharepoint Enterprise Server | 2016 | — |
| Microsoft | Sharepoint Server | 2010 | Sp2 |
| Microsoft | Sharepoint Server | 2019 | — |
| Microsoft | Visual Studio 2017 | >= 15.0, <= 15.9 | — |
| Microsoft | Visual Studio 2019 | >= 16.0, <= 16.6 | — |
References
- http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147Patch, Vendor Advisory
- https://www.exploitalert.com/view-details.html?id=35992Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147Patch, Vendor Advisory
- https://www.exploitalert.com/view-details.html?id=35992Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2020-1147?
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'.
How severe is CVE-2020-1147?
CVE-2020-1147 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 94.24% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2020-1147?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-1147?
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Scan your code nowSource: NVD / NIST