Summary

This security update resolves a Microsoft Office security feature bypass vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2023-36413.

Notes: 

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

  • To fix this issue completely, you must install KB 5002498 together with this update. Otherwise, you might experience an "Ordinal Not Found" error, and the app won't start.

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 Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released security update 5002457.

File hash information

File name

SHA256 hash

mso2016-kb5002521-fullfile-x86-glb.exe

45ED2A56DB930EAD886CB7EC15E6301C003EC4137439B9892AD4C6A1850DC448

mso2016-kb5002521-fullfile-x64-glb.exe

036703FCF064A42372350A806923E0CAF2FBADFBE4CBFD875B0A5541821A0EEF

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

firstrun.exe

firstrun.exe

16.0.5413.1000

774144

27-Oct-23

11:07

msointl.dll.x86.1025

msointl.dll

16.0.5415.1000

3290168

27-Oct-23

09:31

msointl.dll.x86.1026

msointl.dll

16.0.5415.1000

1888232

27-Oct-23

09:31

msointl.dll.x86.1027

msointl.dll

16.0.5415.1000

1820216

27-Oct-23

09:39

msointl.dll.x86.1029

msointl.dll

16.0.5415.1000

1930296

27-Oct-23

09:31

msointl.dll.x86.1030

msointl.dll

16.0.5415.1000

1760232

27-Oct-23

09:31

msointl.dll.x86.1031

msointl.dll

16.0.5415.1000

1950296

27-Oct-23

09:31

msointl.dll.x86.1032

msointl.dll

16.0.5415.1000

2059216

27-Oct-23

09:31

msointl.dll.x86.3082

msointl.dll

16.0.5415.1000

1828544

27-Oct-23

09:31

msointl.dll.x86.1061

msointl.dll

16.0.5415.1000

1733824

27-Oct-23

09:31

msointl.dll.x86.1069

msointl.dll

16.0.5415.1000

1742904

27-Oct-23

09:39

msointl.dll.x86.1035

msointl.dll

16.0.5415.1000

1740456

27-Oct-23

09:31

msointl.dll.x86.1036

msointl.dll

16.0.5415.1000

1977448

27-Oct-23

09:31

msointl.dll.x86.1110

msointl.dll

16.0.5415.1000

1776728

27-Oct-23

09:39

msointl.dll.x86.1095

msointl.dll

16.0.5415.1000

1832504

27-Oct-23

09:39

msointl.dll.x86.1037

msointl.dll

16.0.5415.1000

2910312

27-Oct-23

09:31

msointl.dll.x86.1081

msointl.dll

16.0.5415.1000

1954360

27-Oct-23

09:31

msointl.dll.x86.1050

msointl.dll

16.0.5415.1000

1744040

27-Oct-23

09:31

msointl.dll.x86.1038

msointl.dll

16.0.5415.1000

1953736

27-Oct-23

09:31

msointl.dll.x86.1057

msointl.dll

16.0.5415.1000

1624152

27-Oct-23

09:31

msointl.dll.x86.1040

msointl.dll

16.0.5415.1000

1768504

27-Oct-23

09:31

msointl.dll.x86.1041

msointl.dll

16.0.5415.1000

2014672

27-Oct-23

09:31

msointl.dll.x86.1087

msointl.dll

16.0.5415.1000

2105944

27-Oct-23

09:31

msointl.dll.x86.1099

msointl.dll

16.0.5415.1000

1942584

27-Oct-23

09:39

msointl.dll.x86.1042

msointl.dll

16.0.5415.1000

2771032

27-Oct-23

09:31

msointl.dll.x86.1063

msointl.dll

16.0.5415.1000

1847896

27-Oct-23

09:31

msointl.dll.x86.1062

msointl.dll

16.0.5415.1000

1834072

27-Oct-23

09:31

msointl.dll.x86.1086

msointl.dll

16.0.5415.1000

1651152

27-Oct-23

09:31

msointl.dll.x86.1044

msointl.dll

16.0.5415.1000

1723448

27-Oct-23

09:31

msointl.dll.x86.1043

msointl.dll

16.0.5415.1000

1773656

27-Oct-23

09:31

msointl.dll.x86.1045

msointl.dll

16.0.5415.1000

1919656

27-Oct-23

09:31

msointl.dll.x86.1046

msointl.dll

16.0.5415.1000

1831512

27-Oct-23

09:31

msointl.dll.x86.2070

msointl.dll

16.0.5415.1000

1838656

27-Oct-23

09:31

msointl.dll.x86.1048

msointl.dll

16.0.5415.1000

1965112

27-Oct-23

09:31

msointl.dll.x86.1049

msointl.dll

16.0.5415.1000

1906336

27-Oct-23

09:31

msointl.dll.x86.1051

msointl.dll

16.0.5415.1000

1973848

27-Oct-23

09:31

msointl.dll.x86.1060

msointl.dll

16.0.5415.1000

1809976

27-Oct-23

09:31

msointl.dll.x86.2074

msointl.dll

16.0.5413.1000

1767992

27-Oct-23

09:32

msointl.dll.x86.9242

msointl.dll

16.0.5415.1000

1797096

27-Oct-23

09:32

msointl.dll.x86.1053

msointl.dll

16.0.5415.1000

1736864

27-Oct-23

09:32

msointl.dll.x86.1054

msointl.dll

16.0.5415.1000

1829432

27-Oct-23

09:32

msointl.dll.x86.1055

msointl.dll

16.0.5415.1000

2000976

27-Oct-23

09:32

msointl.dll.x86.1058

msointl.dll

16.0.5415.1000

1894056

27-Oct-23

09:32

msointl.dll.x86.1066

msointl.dll

16.0.5415.1000

2007744

27-Oct-23

09:31

msointl.dll.x86.2052

msointl.dll

16.0.5415.1000

2324000

27-Oct-23

09:32

msointl.dll.x86.1028

msointl.dll

16.0.5415.1000

2331648

27-Oct-23

09:32

f_central_msvcp100_x86.afa96eb4_fa9f_335c_a7cb_36079407553d

msvcp100.dll

435136

27-Oct-23

11:06

f_central_msvcr100_x86.afa96eb4_fa9f_335c_a7cb_36079407553d

msvcr100.dll

787856

27-Oct-23

11:06

msores.dll

msores.dll

16.0.5420.1000

81687096

27-Oct-23

11:06

msores.dll.x86

msores.dll

16.0.5420.1000

81687096

27-Oct-23

11:09

mso.dll.x86

mso.dll

16.0.5422.1000

14430192

28-Oct-23

06:55

msointl.dll.x86.1033

msointl.dll

16.0.5413.1000

1541800

27-Oct-23

11:06

File identifier

File name

File version

File size

Date

Time

firstrun.exe

firstrun.exe

16.0.5149.1000

816928

27-Oct-23

11:08

msointl.dll.x64.1025

msointl.dll

16.0.5422.1000

3327032

28-Oct-23

07:10

msointl.dll.x64.1026

msointl.dll

16.0.5422.1000

1912264

28-Oct-23

06:58

msointl.dll.x64.1027

msointl.dll

16.0.5422.1000

1844176

28-Oct-23

07:06

msointl.dll.x64.1029

msointl.dll

16.0.5422.1000

1954360

28-Oct-23

07:10

msointl.dll.x64.1030

msointl.dll

16.0.5422.1000

1784376

28-Oct-23

07:10

msointl.dll.x64.1031

msointl.dll

16.0.5422.1000

1974736

28-Oct-23

07:10

msointl.dll.x64.1032

msointl.dll

16.0.5422.1000

2083904

28-Oct-23

07:10

msointl.dll.x64.3082

msointl.dll

16.0.5422.1000

1852984

28-Oct-23

07:10

msointl.dll.x64.1061

msointl.dll

16.0.5422.1000

1757856

28-Oct-23

06:58

msointl.dll.x64.1069

msointl.dll

16.0.5422.1000

1767000

28-Oct-23

07:06

msointl.dll.x64.1035

msointl.dll

16.0.5422.1000

1765056

28-Oct-23

07:10

msointl.dll.x64.1036

msointl.dll

16.0.5422.1000

2001400

28-Oct-23

07:10

msointl.dll.x64.1110

msointl.dll

16.0.5422.1000

1801272

28-Oct-23

07:06

msointl.dll.x64.1095

msointl.dll

16.0.5422.1000

1857080

28-Oct-23

07:06

msointl.dll.x64.1037

msointl.dll

16.0.5422.1000

2947176

28-Oct-23

07:10

msointl.dll.x64.1081

msointl.dll

16.0.5422.1000

1978936

28-Oct-23

07:10

msointl.dll.x64.1050

msointl.dll

16.0.5422.1000

1768424

28-Oct-23

07:10

msointl.dll.x64.1038

msointl.dll

16.0.5422.1000

1978016

28-Oct-23

06:58

msointl.dll.x64.1057

msointl.dll

16.0.5422.1000

1648288

28-Oct-23

06:58

msointl.dll.x64.1040

msointl.dll

16.0.5422.1000

1793216

28-Oct-23

07:10

msointl.dll.x64.1041

msointl.dll

16.0.5422.1000

2038976

28-Oct-23

07:10

msointl.dll.x64.1087

msointl.dll

16.0.5422.1000

2130600

28-Oct-23

07:10

msointl.dll.x64.1099

msointl.dll

16.0.5422.1000

1966784

28-Oct-23

07:06

msointl.dll.x64.1042

msointl.dll

16.0.5422.1000

2795712

28-Oct-23

07:10

msointl.dll.x64.1063

msointl.dll

16.0.5422.1000

1872064

28-Oct-23

07:10

msointl.dll.x64.1062

msointl.dll

16.0.5422.1000

1858208

28-Oct-23

07:10

msointl.dll.x64.1086

msointl.dll

16.0.5422.1000

1675944

28-Oct-23

06:58

msointl.dll.x64.1044

msointl.dll

16.0.5422.1000

1747616

28-Oct-23

07:10

msointl.dll.x64.1043

msointl.dll

16.0.5422.1000

1797792

28-Oct-23

07:10

msointl.dll.x64.1045

msointl.dll

16.0.5422.1000

1943720

28-Oct-23

07:10

msointl.dll.x64.1046

msointl.dll

16.0.5422.1000

1856160

28-Oct-23

07:10

msointl.dll.x64.2070

msointl.dll

16.0.5422.1000

1862816

28-Oct-23

07:10

msointl.dll.x64.1048

msointl.dll

16.0.5422.1000

1989184

28-Oct-23

07:10

msointl.dll.x64.1049

msointl.dll

16.0.5422.1000

1930432

28-Oct-23

07:10

msointl.dll.x64.1051

msointl.dll

16.0.5422.1000

1998288

28-Oct-23

06:58

msointl.dll.x64.1060

msointl.dll

16.0.5422.1000

1834664

28-Oct-23

06:58

msointl.dll.x64.2074

msointl.dll

16.0.5422.1000

1792704

28-Oct-23

07:10

msointl.dll.x64.9242

msointl.dll

16.0.5422.1000

1821240

28-Oct-23

07:10

msointl.dll.x64.1053

msointl.dll

16.0.5422.1000

1761472

28-Oct-23

07:10

msointl.dll.x64.1054

msointl.dll

16.0.5422.1000

1853600

28-Oct-23

07:10

msointl.dll.x64.1055

msointl.dll

16.0.5422.1000

2025664

28-Oct-23

07:10

msointl.dll.x64.1058

msointl.dll

16.0.5422.1000

1917904

28-Oct-23

07:10

msointl.dll.x64.1066

msointl.dll

16.0.5422.1000

2032184

28-Oct-23

06:58

msointl.dll.x64.2052

msointl.dll

16.0.5422.1000

2348648

28-Oct-23

07:10

msointl.dll.x64.1028

msointl.dll

16.0.5422.1000

2356336

28-Oct-23

07:10

msointl.dll.x86.1025

msointl.dll

16.0.5415.1000

3290168

27-Oct-23

09:31

msointl.dll.x86.1026

msointl.dll

16.0.5415.1000

1888232

27-Oct-23

09:31

msointl.dll.x86.1029

msointl.dll

16.0.5415.1000

1930296

27-Oct-23

09:31

msointl.dll.x86.1030

msointl.dll

16.0.5415.1000

1760232

27-Oct-23

09:31

msointl.dll.x86.1031

msointl.dll

16.0.5415.1000

1950296

27-Oct-23

09:31

msointl.dll.x86.1032

msointl.dll

16.0.5415.1000

2059216

27-Oct-23

09:31

msointl.dll.x86.3082

msointl.dll

16.0.5415.1000

1828544

27-Oct-23

09:31

msointl.dll.x86.1061

msointl.dll

16.0.5415.1000

1733824

27-Oct-23

09:31

msointl.dll.x86.1035

msointl.dll

16.0.5415.1000

1740456

27-Oct-23

09:31

msointl.dll.x86.1036

msointl.dll

16.0.5415.1000

1977448

27-Oct-23

09:31

msointl.dll.x86.1037

msointl.dll

16.0.5415.1000

2910312

27-Oct-23

09:31

msointl.dll.x86.1081

msointl.dll

16.0.5415.1000

1954360

27-Oct-23

09:31

msointl.dll.x86.1050

msointl.dll

16.0.5415.1000

1744040

27-Oct-23

09:31

msointl.dll.x86.1038

msointl.dll

16.0.5415.1000

1953736

27-Oct-23

09:31

msointl.dll.x86.1057

msointl.dll

16.0.5415.1000

1624152

27-Oct-23

09:31

msointl.dll.x86.1040

msointl.dll

16.0.5415.1000

1768504

27-Oct-23

09:31

msointl.dll.x86.1041

msointl.dll

16.0.5415.1000

2014672

27-Oct-23

09:31

msointl.dll.x86.1087

msointl.dll

16.0.5415.1000

2105944

27-Oct-23

09:31

msointl.dll.x86.1042

msointl.dll

16.0.5415.1000

2771032

27-Oct-23

09:31

msointl.dll.x86.1063

msointl.dll

16.0.5415.1000

1847896

27-Oct-23

09:31

msointl.dll.x86.1062

msointl.dll

16.0.5415.1000

1834072

27-Oct-23

09:31

msointl.dll.x86.1086

msointl.dll

16.0.5415.1000

1651152

27-Oct-23

09:31

msointl.dll.x86.1044

msointl.dll

16.0.5415.1000

1723448

27-Oct-23

09:31

msointl.dll.x86.1043

msointl.dll

16.0.5415.1000

1773656

27-Oct-23

09:31

msointl.dll.x86.1045

msointl.dll

16.0.5415.1000

1919656

27-Oct-23

09:31

msointl.dll.x86.1046

msointl.dll

16.0.5415.1000

1831512

27-Oct-23

09:31

msointl.dll.x86.2070

msointl.dll

16.0.5415.1000

1838656

27-Oct-23

09:31

msointl.dll.x86.1048

msointl.dll

16.0.5415.1000

1965112

27-Oct-23

09:31

msointl.dll.x86.1049

msointl.dll

16.0.5415.1000

1906336

27-Oct-23

09:31

msointl.dll.x86.1051

msointl.dll

16.0.5415.1000

1973848

27-Oct-23

09:31

msointl.dll.x86.1060

msointl.dll

16.0.5415.1000

1809976

27-Oct-23

09:31

msointl.dll.x86.2074

msointl.dll

16.0.5413.1000

1767992

27-Oct-23

09:32

msointl.dll.x86.9242

msointl.dll

16.0.5415.1000

1797096

27-Oct-23

09:32

msointl.dll.x86.1053

msointl.dll

16.0.5415.1000

1736864

27-Oct-23

09:32

msointl.dll.x86.1054

msointl.dll

16.0.5415.1000

1829432

27-Oct-23

09:32

msointl.dll.x86.1055

msointl.dll

16.0.5415.1000

2000976

27-Oct-23

09:32

msointl.dll.x86.1058

msointl.dll

16.0.5415.1000

1894056

27-Oct-23

09:32

msointl.dll.x86.1066

msointl.dll

16.0.5415.1000

2007744

27-Oct-23

09:31

msointl.dll.x86.2052

msointl.dll

16.0.5415.1000

2324000

27-Oct-23

09:32

msointl.dll.x86.1028

msointl.dll

16.0.5415.1000

2331648

27-Oct-23

09:32

f_central_msvcp100_x64.bff61907_aa2d_3a26_8666_98d956a62abc

msvcp100.dll

621928

27-Oct-23

11:08

f_central_msvcr100_x64.bff61907_aa2d_3a26_8666_98d956a62abc

msvcr100.dll

843120

27-Oct-23

11:08

conversion.office.msores.dll

msores.dll

16.0.5419.1000

81687096

27-Oct-23

11:04

msores.dll

msores.dll

16.0.5419.1000

81687096

27-Oct-23

11:04

ppt.conversion.msores.dll

msores.dll

16.0.5419.1000

81687096

ppt.edit.msores.dll

msores.dll

16.0.5419.1000

81687096

wac.office.msores.dll

msores.dll

16.0.5419.1000

81687096

msores.dll

msores.dll

16.0.5420.1000

81687096

27-Oct-23

11:04

msores.dll.x86

msores.dll

16.0.5420.1000

81687096

27-Oct-23

11:09

mso.dll.x64

mso.dll

16.0.5422.1000

19889832

28-Oct-23

06:56

mso.dll.x86

mso.dll

16.0.5422.1000

14430192

28-Oct-23

06:55

msointl.dll.x64.1033

msointl.dll

16.0.5413.1000

1566160

27-Oct-23

11:05

msointl.dll.x86.1033

msointl.dll

16.0.5413.1000

1541800

27-Oct-23

11:06

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