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CVE-2020-1576

Microsoft SharePoint Remote Code Execution Vulnerability

Published: Sep 11, 2020Updated: Feb 23, 2026 Sources: CVE List NVD BDUCWE-494
NVD MITRE
8.5CVSSHIGH
EPSS Score
1.6%
Top 27.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

<p>A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account.</p> <p>Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint.</p> <p>The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.</p>

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-494

Affected Products

sharepoint enterprise servermicrosoft
On-premWeb App
Enterprise Software / itsm-monitoring
sharepoint foundationmicrosoft
On-prem
Operating Systems / windows
sharepoint servermicrosoft
On-premWeb App
Enterprise Software / collaboration-groupware
Microsoft SharePoint Enterprise Server 2016Microsoft
On-premWeb App
Enterprise Software / itsm-monitoring
Microsoft SharePoint Enterprise Server 2013 Service Pack 1Microsoft
On-prem
Enterprise Software
microsoftcommercialUSOperating Systems
and 9 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1576
portal.msrc.microsoft.com
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2020-1576
portal.msrc.microsoft.com

Timeline

Published
Sep 11, 2020
Last Updated
Feb 23, 2026

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