Summary

This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2021-1711.

Note To apply this security update, you must have the release version of 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

This security update contains a fix for the following nonsecurity issue:

  • Applications that use the ACEOLEB provider might stop responding when they try to open a connection.

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.

More information

Security update deployment information

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

Security update replacement information

This security update replaces previously released security update 4484508.

File hash information

File name

SHA1 hash

SHA256 hash

ace2016-kb4486755-fullfile-x86-glb.exe

8185B59236CFF63969E60CA8B2451B3E5CE90880

931131A4F591D150928205CF6F81882E5CA6EC9860F163C2CC5F47F20B51C0A0

ace2016-kb4486755-fullfile-x64-glb.exe

EC8E449D0C9A8F8EF7DECAE040F8609DA9B53D31

06ADCD688D17563AE2CD228C2CA7D40953F242D98AE18CECD7ADE9182D9EDDF4


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.

File identifier

File name

File version

File size

Date

Time

acecore.dll

acecore.dll

16.0.5110.1000

1700232

16-Dec-20

08:12

acacedao.dll

acedao.dll

16.0.5095.1000

448496

15-Dec-20

06:26

acedao.dll

acedao.dll

16.0.5095.1000

448496

15-Dec-20

06:26

aceerr.dll

aceerr.dll

16.0.5095.1000

50088

15-Dec-20

06:26

acees.dll

acees.dll

16.0.5095.1000

676312

15-Dec-20

06:26

aceexch.dll

aceexch.dll

16.0.5095.1000

203200

15-Dec-20

06:26

aceexcl.dll

aceexcl.dll

16.0.5095.1000

414120

15-Dec-20

06:26

aceodbc.dll

aceodbc.dll

16.0.5095.1000

300008

15-Dec-20

06:26

aceoddbs.dll

aceoddbs.dll

16.0.4684.1000

26472

15-Dec-20

06:26

aceoledb.dll

aceoledb.dll

16.0.5095.1000

340416

15-Dec-20

06:26

acetxt.dll

acetxt.dll

16.0.5095.1000

175016

15-Dec-20

06:26

acexbe.dll

acexbe.dll

16.0.5095.1000

267688

15-Dec-20

06:26

expsrv.dll

expsrv.dll

7.1.1104

333192

15-Dec-20

09:22

vbajet32.dll

vbajet32.dll

7.1.1104

17800

15-Dec-20

09:22

File identifier

File name

File version

File size

Date

Time

acecore.dll

acecore.dll

16.0.5110.1000

2292616

16-Dec-20

08:12

acacedao.dll

acedao.dll

16.0.5095.1000

606192

15-Dec-20

06:48

acedao.dll

acedao.dll

16.0.5095.1000

606192

15-Dec-20

06:48

acees.dll

acees.dll

16.0.5095.1000

906192

15-Dec-20

06:48

aceexch.dll

aceexch.dll

16.0.4759.1000

259480

15-Dec-20

06:48

aceexcl.dll

aceexcl.dll

16.0.5095.1000

545696

15-Dec-20

06:48

aceodbc.dll

aceodbc.dll

16.0.4999.1000

352624

15-Dec-20

06:48

aceoddbs.dll

aceoddbs.dll

16.0.4513.1000

28536

15-Dec-20

06:48

aceoledb.dll

aceoledb.dll

16.0.5083.1000

441264

15-Dec-20

06:48

acetxt.dll

acetxt.dll

16.0.4996.1000

213912

15-Dec-20

06:48

acexbe.dll

acexbe.dll

16.0.4831.1000

326544

15-Dec-20

06:48

expsrv.dll

expsrv.dll

7.1.1104

503672

15-Dec-20

09:16

vbajet32.dll

vbajet32.dll

7.1.1104

20872

15-Dec-20

09:16

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