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CVE-2021-1712: Microsoft SharePoint Elevation of Privilege Vulnerability

• Severity: medium (CVSS 6.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-12 · updated 2026-06-17
• Weakness: CWE-269

Description

Microsoft SharePoint Elevation of Privilege Vulnerability

Affected products

• Microsoft SharePoint Server: 2016
• Microsoft SharePoint Foundation 2013 Service Pack 1: 2013-sp1
• Microsoft SharePoint Server: 2019
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before publication — fixed in publication
• Microsoft SharePoint Foundation 2013 Service Pack 1: from 15.0.0 before publication — fixed in publication
• Microsoft SharePoint Server: from 16.0.0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft Sharepoint Enterprise Server 2016 publication; Microsoft SharePoint Foundation 2013 Service Pack 1 publication; Microsoft SharePoint Server publication. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1712
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1712

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