Summary

This security update resolves a Microsoft Access Remote Code Execution Vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-28455.

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?). 

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: May 11, 2021.

Security update replacement information

This security update replaces previously released security update 4486755.

File hash information

File name

SHA256 hash

ace2016-kb4493197-fullfile-x86-glb.exe

EF747565C6F1FA4B5ADD82F436D056607E710290CEC2ADB4A4CA89DAAB1D7DF0

ace2016-kb4493197-fullfile-x64-glb.exe

D6BC88BF5B577E59E5693007826FF78EDBAEFBF67700CC49832F762E26A89F93

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

16.0.5161.1001

1700768

21-Apr-21

06:33

acacedao.dll

acedao.dll

16.0.5149.1000

448992

20-Apr-21

05:54

acedao.dll

acedao.dll

16.0.5149.1000

448992

20-Apr-21

05:54

aceerr.dll

aceerr.dll

16.0.5095.1000

50088

20-Apr-21

05:54

acees.dll

acees.dll

16.0.5149.1000

646608

20-Apr-21

05:54

aceexch.dll

aceexch.dll

16.0.5095.1000

203200

20-Apr-21

05:54

aceexcl.dll

aceexcl.dll

16.0.5149.1000

409000

20-Apr-21

05:54

aceodbc.dll

aceodbc.dll

16.0.5095.1000

300008

20-Apr-21

05:54

aceoddbs.dll

aceoddbs.dll

16.0.4684.1000

26472

20-Apr-21

05:54

aceoledb.dll

aceoledb.dll

16.0.5095.1000

340416

20-Apr-21

05:54

acetxt.dll

acetxt.dll

16.0.5095.1000

175016

20-Apr-21

05:54

acexbe.dll

acexbe.dll

16.0.5095.1000

267688

20-Apr-21

05:54

expsrv.dll

expsrv.dll

7.1.1108

333184

20-Apr-21

02:53

vbajet32.dll

vbajet32.dll

7.1.1108

17792

20-Apr-21

02:53

File identifier

File name

File version

File size

Date

Time

acecore.dll

acecore.dll

16.0.5161.1001

2293144

21-Apr-21

06:36

acacedao.dll

acedao.dll

16.0.5095.1000

606192

20-Apr-21

06:02

acedao.dll

acedao.dll

16.0.5095.1000

606192

20-Apr-21

06:02

acees.dll

acees.dll

16.0.5095.1000

906192

20-Apr-21

06:02

aceexch.dll

aceexch.dll

16.0.4759.1000

259480

20-Apr-21

06:02

aceexcl.dll

aceexcl.dll

16.0.5095.1000

545696

20-Apr-21

06:02

aceodbc.dll

aceodbc.dll

16.0.4999.1000

352624

20-Apr-21

06:02

aceoddbs.dll

aceoddbs.dll

16.0.4513.1000

28536

20-Apr-21

06:02

aceoledb.dll

aceoledb.dll

16.0.5083.1000

441264

20-Apr-21

06:02

acetxt.dll

acetxt.dll

16.0.4996.1000

213912

20-Apr-21

06:02

acexbe.dll

acexbe.dll

16.0.4831.1000

326544

20-Apr-21

06:02

expsrv.dll

expsrv.dll

7.1.1108

503680

20-Apr-21

07:04

vbajet32.dll

vbajet32.dll

7.1.1108

20864

20-Apr-21

07:04

Information about protection and security

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