KB4583465 - Description of the security update for SQL Server 2012 SP4 GDR: January 12, 2021

Applies to: SQL Server 2012 Service Pack 4


Data can be sent over a network to an affected Microsoft SQL Server instance that might cause code to run against the SQL Server process if a certain extended event is enabled. To learn more about the vulnerability, see CVE-2021-1636.

The SQL Server components are updated to the following builds in this security update.

Component Product version File version
SQL Server 11.0.7507.2 2011.110.7507.2

This security update fixes the following issue:

How to obtain and install the update

Method 1: Microsoft Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Note The detection logic has been updated for this and future security releases that are posted to the Microsoft Update Catalog website. For more information, see Updates to the Microsoft Update detection logic for SQL Server servicing.

Method 3: Microsoft Download Center

The following file is available for download from the Microsoft Download Center:

Download the package now
Release Date: January 12, 2021

For more information about how to download Microsoft support files, click the following article number to go to the article in the Microsoft Knowledge Base:

How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses by using the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to it.

More information


To apply this update, you must have SQL Server 2012 SP4 or any SQL Server 2012 SP4 GDR release through this SQL Server 2012 SP4 GDR installed.

Security update deployment information

For deployment information about this update, see security update deployment information: January 12, 2021.

File hash information

File name SHA1 hash SHA256 hash
SQLServer2012-KB4583465-x86.exe B16D11EF1FF17867583BD07A38DF079EC9580162 331A42855D6846E4FF42456988F1BBF7BE67F5E3DE09A241A192655FC6B0CD3C
SQLServer2012-KB4583465-x64.exe C6E5EA14425FED26B885AB6B70ABA8622817FD8C 37E810E9AC2447CA5240CD939700DE81520A4EE8F12ECE9492D75E49E1203A9D

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times might change when you perform certain operations on the files.

Information about protection and security

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