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High7.6Microsoft Server

High [CVE-2021-38651] Microsoft SharePoint Server Spoofing Vulnerability

This high-severity Microsoft Server advisory covers CVE-2021-38651 affecting Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Foundation 2013 Service Pack 1, Microsoft SharePoint Server 2019.

CVE-2021-38651 Published Sep 15, 2021Updated by vendor Aug 10, 2026
Affected products & platforms
Microsoft ServerSharePoint Server
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Summary

Microsoft SharePoint Server Spoofing Vulnerability

Affected products named by the advisory: Microsoft SharePoint Enterprise Server 2016; Microsoft SharePoint Foundation 2013 Service Pack 1; Microsoft SharePoint Server 2019.

Affected versions
  • Microsoft SharePoint Enterprise Server 2016 16.0.0 before 5215.1000
  • Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.0 before 5381.1000
  • Microsoft SharePoint Server 2019 16.0.0 before 10378.20002

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions
  • 5215.1000
  • 5381.1000
  • 10378.20002

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 5215.1000, 5381.1000, 10378.20002. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

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