Description of the security update for Office 2016: February 13, 2024 (KB5002519)

Summary

This security update resolves a Microsoft Outlook remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2024-21413.

**Note:**To apply this security update, you must have the release version of Microsoft Office 2016 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn’t apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?)

Improvements and fixes

After you install KB 5002457 (but not together with KB 5002498), a cross-update dependency is introduced that prevents Office applications from starting. This update eliminates the dependency and allows the applications to start even if both updates are not installed. However, both updates should be installed to address the original security issue.

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.

• Download security update 5002519 for the 32-bit version of Office 2016
• Download security update 5002519 for the 64-bit version of Office 2016

More information

Security update deployment information

For deployment information about this update, see Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released security update 5002100.

File hash information

File name	SHA256 hash
msodll99l2016-kb5002519-fullfile-x86-glb.exe	1855F4B401405E787C0C9E2C9A1E1FC213B8333E9A82EEEB5999CF0379CC17EF
msodll99l2016-kb5002519-fullfile-x64-glb.exe	DFFE2EE0A22127BB3FB6F3443170773A098C997DEC580B0729B996471FA1BF71

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 may change when you perform certain operations on the files.

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For all supported x86-based versions of Office 2016

File identifier	File name	File version	File size	Date	Time
mso99lres.dll	mso99lres.dll	16.0.4684.1000	9501424	1-Feb-24	05:27
mso99lres.dll.x86	mso99lres.dll	16.0.4684.1000	9501424	1-Feb-24	05:29
mso99lwin32client.dll.x64	mso99lwin32client.dll	16.0.5431.1000	8184888	1-Feb-24	05:25
xlsrv.ecs.mso99lwin32client.dll	mso99lwin32client.dll	16.0.5431.1000	8184888
mso99lwin32client.dll.x86	mso99lwin32client.dll	16.0.5431.1000	5877232	1-Feb-24	05:27

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For all supported x64-based versions of Office 2016

File identifier	File name	File version	File size	Date	Time
conversion.office.mso99lres.dll	mso99lres.dll	16.0.4666.1000	9501416	1-Feb-24	05:25
mso99lres.dll	mso99lres.dll	16.0.4666.1000	9501416	1-Feb-24	05:25
ppt.conversion.mso99lres.dll	mso99lres.dll	16.0.4666.1000	9501416
ppt.edit.mso99lres.dll	mso99lres.dll	16.0.4666.1000	9501416
wac.office.mso99lres.dll	mso99lres.dll	16.0.4666.1000	9501416
mso99lres.dll	mso99lres.dll	16.0.4684.1000	9501424	1-Feb-24	05:25
mso99lres.dll.x86	mso99lres.dll	16.0.4684.1000	9501424	1-Feb-24	05:29
mso99lwin32client.dll.x64	mso99lwin32client.dll	16.0.5431.1000	8184888	1-Feb-24	05:28
xlsrv.ecs.mso99lwin32client.dll	mso99lwin32client.dll	16.0.5431.1000	8184888
mso99lwin32client.dll.x86	mso99lwin32client.dll	16.0.5431.1000	5877232	1-Feb-24	05:27

Information about protection and security

Protect yourself online: Windows Security supportLearn how we guard against cyber threats: Microsoft Security