CVE-2020-1147
Confirmed PUBLISHEDA remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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'.
- CVE Published
- Jul 14, 2020
- Exploitation Reported
- Nov 03, 2021
- CVSS
- 7.8 High
- EPSS
- —
Affected Versions
103 version rows · page 1 of 5
| Vendor | Product | Version | Status |
|---|---|---|---|
| Microsoft |
Microsoft SharePoint Enterprise Server
|
2016 |
Affected |
| Microsoft |
Microsoft SharePoint Enterprise Server
|
2013 Service Pack 1 |
Affected |
| Microsoft |
Microsoft SharePoint Server
|
2019 |
Affected |
| Microsoft |
Microsoft SharePoint Server
|
2010 Service Pack 2 |
Affected |
| Microsoft |
Microsoft Visual Studio 2019
|
16.0 |
Affected |
| Microsoft |
Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5)
|
unspecified |
Affected |
| Microsoft |
Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
|
unspecified |
Affected |
| Microsoft |
Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
|
unspecified |
Affected |
| Microsoft |
.NET Core
|
2.1 |
Affected |
| Microsoft |
.NET Core
|
3.1 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows 7 for 32-bit Systems Service Pack 1 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows 7 for x64-based Systems Service Pack 1 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows 8.1 for 32-bit systems |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows 8.1 for x64-based systems |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows RT 8.1 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows Server 2008 R2 for x64-based Systems Service Pack 1 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows Server 2012 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows Server 2012 (Server Core installation) |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows Server 2012 R2 |
Affected |
| Microsoft |
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
|
Windows Server 2012 R2 (Server Core installation) |
Affected |
| Microsoft |
Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems
|
unspecified |
Affected |
| Microsoft |
Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems
|
unspecified |
Affected |
| Microsoft |
Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)
|
unspecified |
Affected |
| Microsoft |
Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems
|
unspecified |
Affected |
CVE References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147 portal.msrc.microsoft.com · CVE Record https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CV...
- packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-De... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTa...
- packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-201... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Serv...
- exploitalert.com/view-details.html exploitalert.com · CVE Record https://www.exploitalert.com/view-details.html?id=35992
- packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-201... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Serv...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2021-11-03 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_data_deserialization.rb | Apr 28, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2021-11-03 00:00:00 UTC · CISA
Proof of concept available
Recorded 2025-04-28 15:02:56 UTC
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_data_deserialization.rb | Apr 28, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
15:02 UTC about 1 year ago15:02 UTC · about 1 year ago
Metasploit module available
Exploit module available
-
15:02 UTC about 1 year ago15:02 UTC · about 1 year ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
22:54 UTC about 6 years ago22:54 UTC · about 6 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 6 years ago00:00 UTC · over 6 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2020-1147
{
"cve_id": "CVE-2020-1147",
"title": "A remote code execution vulnerability exists in .NET Framework, Microsoft Sha...",
"affected_vendor": "Microsoft",
"affected_product": "Microsoft SharePoint Enterprise Server, Microsoft SharePoint Server, Microsoft Visual Studio 2019, Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5), Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8), Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3), .NET Core, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, 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, Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows Server 2016, Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation), Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1, Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1, Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems, Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems, Microsoft .NET Framework 4.8 on Windows RT 8.1, Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1, Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Microsoft .NET Framework 4.8 on Windows Server 2012, Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation), Microsoft .NET Framework 4.8 on Windows Server 2012 R2, Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation), Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation), 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 .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 .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016, 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 .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems, Microsoft .NET Framework 4.6, Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation), Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}