Microsoft SharePoint Server Remote Code Execution Vulnerability

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2021-27076
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-11 16:15:18 UTC
Updated2026-08-19 17:17:52 UTC
DescriptionMicrosoft SharePoint Server Remote Code Execution Vulnerability

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.145020000 probability, percentile 0.963480000 (date 2026-08-19)

Problem Types: NVD-CWE-noinfo | Remote Code Execution

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
2.0[email protected]Primary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:S/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft Business Productivity Servers 2010 sp2 All All
Application Microsoft Sharepoint Foundation 2013 sp1 All All
Application Microsoft Sharepoint Server 2016 All All All
Application Microsoft Sharepoint Server 2019 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Microsoft Business Productivity Servers 2010 Service Pack 2 affected 13.0.0.0 14.0.7267.5000 custom Not specified
CNA Microsoft Microsoft SharePoint Enterprise Server 2016 affected 16.0.0 16.0.5134.1000 custom x64-based Systems
CNA Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 affected 15.0.0 15.0.5327.1000 custom x64-based Systems
CNA Microsoft Microsoft SharePoint Server 2019 affected 16.0.0 16.0.10372.20000 custom x64-based Systems

References

ReferenceSourceLinkTags
msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27076 [email protected] msrc.microsoft.com
Security Update Guide - Microsoft Security Response Center af854a3a-2127-422b-91ae-364da2661108 portal.msrc.microsoft.com Patch, Vendor Advisory
ZDI-21-276 | Zero Day Initiative af854a3a-2127-422b-91ae-364da2661108 www.zerodayinitiative.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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