Skip to main content

Sharepoint Enterprise Server CVE-2020-16979

MEDIUM
2020-11-11 secure@microsoft.com
5.3
CVSS 3.1 · Vendor: microsoft
View

Vulnerability Assessment

Impact

CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, high complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 2.9% exploitation probability (EPSS)

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

Alert me

AnalysisAI

Microsoft SharePoint Information Disclosure Vulnerability. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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

Affected products include: 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

No credit card · 7-day full trial

Severity by source

Vendor (microsoft) PRIMARY 5.3 MEDIUM
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionCVE.org

Microsoft SharePoint Information Disclosure Vulnerability

Threat Intelligence Overview

EPSS Score
2.9%
Top 15% exploitable
Data Quality
2 sources
Confidence: Low

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 MEDIUM
CISA KEV No
Public POC No
EPSS 2.9%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
No
Human Impact· derived
Medium

Priority Score

29
Low Medium High Critical
KEV: 0
EPSS: +3
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

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:*:*:*:*:*:*:*
CVE-2025-49706 MEDIUM 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 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 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 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 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
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 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 POC
8.8 Jun 10

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

CVE-2023-24955 HIGH 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
8.8 Jun 10

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

CVE-2020-1102 HIGH
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
8.8 Dec 12

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

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy