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CVE-2020-1147

HIGH
7.8
CVSS Score
Published: July 14, 2020 at 10:54 PM UTC
Updated: June 17, 2026 at 03:00 AM UTC
14 products affected across 1 vendorSharePoint ServerSharePoint Enterprise Server.NET Framework

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Severity
HIGH7.8
Exploitation
CISA KEV
Exploit prediction
EPSS 94%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score94.0%

EPSS (Exploit Prediction Scoring System) estimates a 94.0% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Nov 3, 2021
Remediation Due
May 3, 2022
1637 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2020-1147

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'.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

.NET Core· Microsoft
95%
2.13.1
.NET Framework· Microsoft
95%
19032.0 sp23.0 sp23.53.5.14.5.24.64.6.14.6.24.74.7.14.7.24.8Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2Windows 7 for 32-bit Systems Service Pack 1Windows 7 for x64-based Systems Service Pack 1Windows 8.1 for 32-bit systemsWindows 8.1 for x64-based systemsWindows RT 8.1Windows Server 2008 R2 for x64-based Systems Service Pack 1Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Windows Server 2008 for 32-bit Systems Service Pack 2Windows Server 2008 for x64-based Systems Service Pack 2Windows Server 2012Windows Server 2012 (Server Core installation)Windows Server 2012 R2Windows Server 2012 R2 (Server Core installation)
microsoft-windows-10 (environment) · microsoft-windows-7 (environment) · microsoft-windows-8-1 (environment) · microsoft-windows-rt-8-1 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-server-2012 (environment) · microsoft-windows-server-2016 (environment) · microsoft-windows-server-2019 (environment)
SharePoint Enterprise Server· Microsoft
95%
2013 Service Pack 12013 sp12016
SharePoint Server· Microsoft
95%
2010 Service Pack 22010 sp22019
Visual Studio 2017· Microsoft
95%
15.0 ≤ v ≤ 15.9
Visual Studio 2019· Microsoft
95%
16.0 ≤ v ≤ 16.616.0
Windows 10· Microsoftdevice
80%
All versions
Windows 7· Microsoftdevice
80%
All versions
Windows 8-1· Microsoftdevice
80%
All versions
Windows Rt 8-1· Microsoftdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.exploitalert.com/view-details.html?id=35992
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-Other

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