This security update resolves a Microsoft SharePoint Server remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-42294.
Improvements and fixes
This security update contains fixes and improvements for the following nonsecurity issues in SharePoint Server Subscription Edition. To enable the improvements or fix the issues completely, you have to install KB 5002045 together with this update.
Adds a Timer job to detect and repair content database inconsistencies in the SharePoint Server configuration.
Fixes an issue in which the New-SPCertificate does not accurately show which parameters are required and which are optional.
Fixes an issue in which the classic view does not show the Follow status.
How to get and install the update
Method 1: Microsoft Update
This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.
Method 2: Microsoft Update Catalog
To get the standalone package for this update, go to the Microsoft Update Catalog website.
Method 3: Microsoft Download Center
You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.
Security update deployment information
For deployment information about this update, see Security update deployment information: December 14, 2021 (KB5008541).
Security update replacement information
This security update replaces no previously released security update.
File hash information
Download the list of files that are included in security update 5002047.
Information about protection and security
Protect yourself online: Windows Security support
Learn how we guard against cyber threats: Microsoft Security