Sign in with Microsoft
Sign in or create an account.
Hello,
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.

Summary

This security update resolves a vulnerability in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-11826.

Note To apply this security update, you must have the release version of Microsoft Word 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 Determining your Office version.)

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 stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the stand-alone 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: October 10, 2017.

Security update replacement information

This security update replaces previously released security update KB 3191945.

File hash information

Package Name

Package Hash SHA 1

Package Hash SHA 2

word2016-kb4011222-fullfile-x64-glb.exe

94AF3087B240A94A73CE85F9A1F9B3767A809D01

86166AD296ED2189369BFBAE3FB1C09DAE718F91ABF540BE63EB9B03AD0EF463

word2016-kb4011222-fullfile-x86-glb.exe

4C4D0E7681770BD317259B4395CB3A76F92002BF

26BD67B5D6D6C630BF806C9ED019169CD45F252321BAE7F8DF1E68D0BF372C49

File information

 

File identifier

File name

File version

File size

Date

Time

wwintl.dll_1025

wwintl.dll

16.0.4471.1000

821432

4-Oct-17

10:37

wwintl.dll_1026

wwintl.dll

16.0.4471.1000

818872

4-Oct-17

10:37

wwintl.dll_1029

wwintl.dll

16.0.4471.1000

874680

4-Oct-17

10:37

wwintl.dll_1030

wwintl.dll

16.0.4549.1000

805568

4-Oct-17

10:37

wwintl.dll_1031

wwintl.dll

16.0.4471.1000

885944

4-Oct-17

10:37

wwintl.dll_1032

wwintl.dll

16.0.4471.1000

876216

4-Oct-17

10:37

wwintl.dll_3082

wwintl.dll

16.0.4471.1000

845496

4-Oct-17

10:37

wwintl.dll_1061

wwintl.dll

16.0.4471.1000

769208

4-Oct-17

10:37

wwintl.dll_1036

wwintl.dll

16.0.4471.1000

881848

4-Oct-17

10:37

wwintl.dll_1081

wwintl.dll

16.0.4471.1000

863416

4-Oct-17

10:37

wwintl.dll_1050

wwintl.dll

16.0.4465.1000

828608

4-Oct-17

10:37

wwintl.dll_1038

wwintl.dll

16.0.4471.1000

884408

4-Oct-17

10:37

wwintl.dll_1057

wwintl.dll

16.0.4471.1000

776888

4-Oct-17

10:37

wwintl.dll_1040

wwintl.dll

16.0.4465.1000

836280

4-Oct-17

10:37

wwintl.dll_1041

wwintl.dll

16.0.4465.1000

788152

4-Oct-17

10:37

wwintl.dll_1087

wwintl.dll

16.0.4471.1000

878776

4-Oct-17

10:37

wwintl.dll_1042

wwintl.dll

16.0.4471.1000

781496

4-Oct-17

10:37

wwintl.dll_1062

wwintl.dll

16.0.4471.1000

822456

4-Oct-17

10:37

wwintl.dll_1086

wwintl.dll

16.0.4471.1000

780984

4-Oct-17

10:37

wwintl.dll_1044

wwintl.dll

16.0.4465.1000

794816

4-Oct-17

10:37

wwintl.dll_1043

wwintl.dll

16.0.4561.1000

834232

4-Oct-17

10:37

wwintl.dll_1045

wwintl.dll

16.0.4471.1000

850104

4-Oct-17

10:37

wwintl.dll_1046

wwintl.dll

16.0.4471.1000

851640

4-Oct-17

10:37

wwintl.dll_2070

wwintl.dll

16.0.4471.1000

859320

4-Oct-17

10:37

wwintl.dll_1048

wwintl.dll

16.0.4465.1000

894144

4-Oct-17

10:37

wwintl.dll_1049

wwintl.dll

16.0.4465.1000

807616

4-Oct-17

10:37

wwintl.dll_1060

wwintl.dll

16.0.4465.1000

819392

4-Oct-17

10:37

wwintl.dll_2074

wwintl.dll

16.0.4465.1000

815808

4-Oct-17

10:37

wwintl.dll_9242

wwintl.dll

16.0.4465.1000

815808

4-Oct-17

10:37

wwintl.dll_1053

wwintl.dll

16.0.4471.1000

801464

4-Oct-17

10:37

wwintl.dll_1054

wwintl.dll

16.0.4471.1000

822968

4-Oct-17

10:37

wwintl.dll_1055

wwintl.dll

16.0.4465.1000

879808

4-Oct-17

10:37

wwintl.dll_1058

wwintl.dll

16.0.4471.1000

818360

4-Oct-17

10:37

wwintl.dll_1066

wwintl.dll

16.0.4465.1000

911040

4-Oct-17

10:37

wwintl.dll_2052

wwintl.dll

16.0.4471.1000

694968

4-Oct-17

10:37

wwintl.dll_1028

wwintl.dll

16.0.4471.1000

703672

4-Oct-17

10:37

pdfreflow.exe

pdfreflow.exe

16.0.4600.1000

10302672

3-Oct-17

12:19

wwintl.dll_1033

wwintl.dll

16.0.4465.1000

698560

3-Oct-17

12:18

winword.exe

winword.exe

16.0.4600.1002

1936040

5-Oct-17

01:12

wrd12cnv.dll

wordcnv.dll

16.0.4600.1002

9162408

5-Oct-17

01:12

wwlib.dll

wwlib.dll

16.0.4600.1002

29533352

5-Oct-17

01:12

 

File identifier

File name

File version

File size

Date

Time

calligra.dll

calligra.dll

16.0.4528.1000

338688

4-Oct-17

10:56

wdsrv.conversion.word.wwintl.dll_1025

wwintl.dll

16.0.4600.1002

942248

5-Oct-17

01:11

wwintl.dll_1025

wwintl.dll

16.0.4600.1002

942248

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1026

wwintl.dll

16.0.4600.1002

897704

5-Oct-17

01:11

wwintl.dll_1026

wwintl.dll

16.0.4600.1002

897704

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1029

wwintl.dll

16.0.4600.1002

953512

5-Oct-17

01:11

wwintl.dll_1029

wwintl.dll

16.0.4600.1002

953512

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1030

wwintl.dll

16.0.4600.1002

884392

5-Oct-17

01:10

wwintl.dll_1030

wwintl.dll

16.0.4600.1002

884392

5-Oct-17

01:10

wdsrv.conversion.word.wwintl.dll_1031

wwintl.dll

16.0.4600.1002

964776

5-Oct-17

01:11

wwintl.dll_1031

wwintl.dll

16.0.4600.1002

964776

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1032

wwintl.dll

16.0.4600.1002

955048

5-Oct-17

01:11

wwintl.dll_1032

wwintl.dll

16.0.4600.1002

955048

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_3082

wwintl.dll

16.0.4600.1002

924320

5-Oct-17

01:10

wwintl.dll_3082

wwintl.dll

16.0.4600.1002

924320

5-Oct-17

01:10

wdsrv.conversion.word.wwintl.dll_1061

wwintl.dll

16.0.4600.1002

848040

5-Oct-17

01:10

wwintl.dll_1061

wwintl.dll

16.0.4600.1002

848040

5-Oct-17

01:10

wdsrv.conversion.word.wwintl.dll_1035

wwintl.dll

16.0.4600.1002

895144

5-Oct-17

01:11

wwintl.dll_1035

wwintl.dll

16.0.4600.1002

895144

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1036

wwintl.dll

16.0.4600.1002

960680

5-Oct-17

01:11

wwintl.dll_1036

wwintl.dll

16.0.4600.1002

960680

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1037

wwintl.dll

16.0.4600.1002

881320

5-Oct-17

01:11

wwintl.dll_1037

wwintl.dll

16.0.4600.1002

881320

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1081

wwintl.dll

16.0.4600.1002

942248

5-Oct-17

01:11

wwintl.dll_1081

wwintl.dll

16.0.4600.1002

942248

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1050

wwintl.dll

16.0.4600.1002

907424

5-Oct-17

01:11

wwintl.dll_1050

wwintl.dll

16.0.4600.1002

907424

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1038

wwintl.dll

16.0.4600.1002

963240

5-Oct-17

01:11

wwintl.dll_1038

wwintl.dll

16.0.4600.1002

963240

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1057

wwintl.dll

16.0.4600.1002

856232

5-Oct-17

01:11

wwintl.dll_1057

wwintl.dll

16.0.4600.1002

856232

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1040

wwintl.dll

16.0.4600.1002

915112

5-Oct-17

01:11

wwintl.dll_1040

wwintl.dll

16.0.4600.1002

915112

5-Oct-17

01:11

wac.word.wwintl.dll_1041

wwintl.dll

16.0.4600.1002

866984

wdsrv.conversion.word.wwintl.dll_1041

wwintl.dll

16.0.4600.1002

866984

5-Oct-17

01:11

wwintl.dll_1041

wwintl.dll

16.0.4600.1002

866984

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1087

wwintl.dll

16.0.4600.1002

957608

5-Oct-17

01:11

wwintl.dll_1087

wwintl.dll

16.0.4600.1002

957608

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1042

wwintl.dll

16.0.4600.1002

860328

5-Oct-17

01:11

wwintl.dll_1042

wwintl.dll

16.0.4600.1002

860328

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1063

wwintl.dll

16.0.4600.1002

914088

5-Oct-17

01:11

wwintl.dll_1063

wwintl.dll

16.0.4600.1002

914088

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1062

wwintl.dll

16.0.4600.1002

901288

5-Oct-17

01:11

wwintl.dll_1062

wwintl.dll

16.0.4600.1002

901288

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1086

wwintl.dll

16.0.4600.1002

859816

5-Oct-17

01:11

wwintl.dll_1086

wwintl.dll

16.0.4600.1002

859816

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1044

wwintl.dll

16.0.4600.1002

873632

5-Oct-17

01:11

wwintl.dll_1044

wwintl.dll

16.0.4600.1002

873632

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1043

wwintl.dll

16.0.4600.1002

913064

5-Oct-17

01:11

wwintl.dll_1043

wwintl.dll

16.0.4600.1002

913064

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1045

wwintl.dll

16.0.4600.1002

929448

5-Oct-17

01:11

wwintl.dll_1045

wwintl.dll

16.0.4600.1002

929448

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1046

wwintl.dll

16.0.4600.1002

930472

5-Oct-17

01:11

wwintl.dll_1046

wwintl.dll

16.0.4600.1002

930472

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_2070

wwintl.dll

16.0.4600.1002

938144

5-Oct-17

01:11

wwintl.dll_2070

wwintl.dll

16.0.4600.1002

938144

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1048

wwintl.dll

16.0.4600.1002

973480

5-Oct-17

01:11

wwintl.dll_1048

wwintl.dll

16.0.4600.1002

973480

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1049

wwintl.dll

16.0.4600.1002

886440

5-Oct-17

01:11

wwintl.dll_1049

wwintl.dll

16.0.4600.1002

886440

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1051

wwintl.dll

16.0.4600.1002

968352

5-Oct-17

01:11

wwintl.dll_1051

wwintl.dll

16.0.4600.1002

968352

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1060

wwintl.dll

16.0.4600.1002

898208

5-Oct-17

01:11

wwintl.dll_1060

wwintl.dll

16.0.4600.1002

898208

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_2074

wwintl.dll

16.0.4600.1002

894632

5-Oct-17

01:11

wwintl.dll_2074

wwintl.dll

16.0.4600.1002

894632

5-Oct-17

01:11

wac.word.wwintl.dll_9242

wwintl.dll

16.0.4600.1002

894632

wdsrv.conversion.word.wwintl.dll_9242

wwintl.dll

16.0.4600.1002

894632

5-Oct-17

01:11

wwintl.dll_9242

wwintl.dll

16.0.4600.1002

894632

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1053

wwintl.dll

16.0.4600.1002

880296

5-Oct-17

01:11

wwintl.dll_1053

wwintl.dll

16.0.4600.1002

880296

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1054

wwintl.dll

16.0.4600.1002

902312

5-Oct-17

01:11

wwintl.dll_1054

wwintl.dll

16.0.4600.1002

902312

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1055

wwintl.dll

16.0.4600.1002

958632

5-Oct-17

01:11

wwintl.dll_1055

wwintl.dll

16.0.4600.1002

958632

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1058

wwintl.dll

16.0.4600.1002

897192

5-Oct-17

01:11

wwintl.dll_1058

wwintl.dll

16.0.4600.1002

897192

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1066

wwintl.dll

16.0.4600.1002

989864

5-Oct-17

01:11

wwintl.dll_1066

wwintl.dll

16.0.4600.1002

989864

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_2052

wwintl.dll

16.0.4600.1002

774312

5-Oct-17

01:11

wwintl.dll_2052

wwintl.dll

16.0.4600.1002

774312

5-Oct-17

01:11

wdsrv.conversion.word.wwintl.dll_1028

wwintl.dll

16.0.4600.1002

783016

5-Oct-17

01:11

wwintl.dll_1028

wwintl.dll

16.0.4600.1002

783016

5-Oct-17

01:11

pdfreflow.exe

pdfreflow.exe

16.0.4600.1000

15916248

3-Oct-17

12:21

wac.word.wwintl.dll_1033

wwintl.dll

16.0.4465.1000

777920

wdsrv.conversion.word.wwintl.dll_1033

wwintl.dll

16.0.4465.1000

777920

wwintl.dll_1033

wwintl.dll

16.0.4465.1000

777920

3-Oct-17

12:17

winword.exe

winword.exe

16.0.4600.1002

1939112

5-Oct-17

01:12

wrd12cnv.dll

wordcnv.dll

16.0.4600.1002

11863200

5-Oct-17

01:12

wwlib.dll

wwlib.dll

16.0.4600.1002

37129896

5-Oct-17

01:12

How to get help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

Propose a feature or provide feedback on Office Core: Office User Voice portal
 

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!

×