What is the CVSS score of CVE-2020-0931?

CVE-2020-0931 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 10.7%.

Is there a patch available for CVE-2020-0931?

Yes, a patch is available for CVE-2020-0931. Update the affected software to the latest version immediately.

Sharepoint Enterprise Server CVE-2020-0931

HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2020-04-15 secure@microsoft.com

RCE Microsoft File Upload Sharepoint Enterprise Server Sharepoint Server Sharepoint Foundation Business Productivity Servers

8.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-434 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V5 - File Handling File type validation, storage isolation MITRE ATT&CK 2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application.

This Week Schedule remediation this week. Why: HIGH severity + EPSS > 10%.

Patch available 10.7% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. This Unrestricted File Upload vulnerability could allow attackers to upload malicious files that can be executed on the server.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0920, CVE-2020-0929, CVE-2020-0932, CVE-2020-0971, CVE-2020-0974. Affected products include: Microsoft Business Productivity Servers, Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.

Know when Sharepoint Enterprise Server gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0920, CVE-2020-0929, CVE-2020-0932, CVE-2020-0971, CVE-2020-0974.

Threat Intelligence Overview

EPSS Score

10.7%

Top 5% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 10.7%

Patch available Yes

Active threat No

Deciding rule

HIGH severity + EPSS > 10%

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +11

CVSS: +44

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Malicious File Upload HIGH

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:microsoft:business_productivity_servers:2010:sp2:*:*:*:*:*:*

cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*

cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

More in Sharepoint Enterprise Server

View all

CVE-2025-49706 MEDIUM Act Now POC

6.5 Jul 08

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a networ

CVE-2023-21716 CRITICAL Act Now POC

9.8 Feb 14

Microsoft Word Remote Code Execution Vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotely e

CVE-2017-0003 HIGH Act Now POC

7.8 Jan 10

Microsoft Word 2016 and SharePoint Enterprise Server 2016 allow remote attackers to execute arbitrary code via a crafted

CVE-2021-31181 HIGH Act Now POC

8.8 May 11

Microsoft SharePoint Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely

CVE-2020-16952 HIGH Act Now POC

8.6 Oct 16

<p>A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source mark

CVE-2017-8742 HIGH Act Now

7.8 Sep 13

A remote code execution vulnerability exists in Microsoft PowerPoint 2007 Service Pack 3, Microsoft PowerPoint 2010 Serv

CVE-2020-1147 HIGH Act Now POC

7.8 Jul 14

A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the softwar

CVE-2025-47166 HIGH This Week POC

8.8 Jun 10

Critical deserialization vulnerability in Microsoft Office SharePoint that allows authenticated attackers to execute arb

CVE-2023-24955 HIGH Act Now POC

7.2 May 09

Microsoft SharePoint Server Remote Code Execution Vulnerability. Rated high severity (CVSS 7.2), this vulnerability is r

CVE-2025-47163 HIGH Act Now

8.8 Jun 10

Critical deserialization vulnerability in Microsoft Office SharePoint that allows authenticated attackers to execute arb

CVE-2020-1102 HIGH Act Now

8.8 May 21

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup

CVE-2017-11936 HIGH Act Now

8.8 Dec 12

Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability due to the way web requests a

Same weakness CWE-434 – Unrestricted Upload of File with Dangerous Type

View all

CVE-2016-3088 CRITICAL POC

9.8

CVE-2021-31207 MEDIUM POC

6.6

CVE-2025-52691 CRITICAL POC

10.0

CVE-2017-12617 HIGH POC

8.1

CVE-2024-50623 CRITICAL POC

9.8

CVE-2017-11357 CRITICAL POC

9.8

CVE-2017-12615 HIGH POC

8.1

CVE-2018-9206 CRITICAL POC

9.8

Same technique RCE

View all

CVE-2021-44228 CRITICAL POC

10.0

CVE-2017-7269 CRITICAL POC

9.8

CVE-2022-47966 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2023-3519 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2016-4117 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

References

Advisories & patches

PATCH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0931

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back