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mskbMicrosoftKB5002033
HistoryDec 14, 2021 - 8:00 a.m.

Description of the security update for Office 2016: December 14, 2021 (KB5002033)

2021-12-1408:00:00
Microsoft
support.microsoft.com
51

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

5.7 Medium

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

0.002 Low

EPSS

Percentile

54.4%

Description of the security update for Office 2016: December 14, 2021 (KB5002033)

Summary

This security update resolves a Microsoft Office trust center spoofing vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-43255.

**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: December 14, 2021 (KB5008541).

Security update replacement information

This security update replaces previously released security update 5002005.

File hash information

File name SHA256 hash
mso2016-kb5002033-fullfile-x86-glb.exe ABDA0D142E843275D087EAC197867B94EC79CD178A1120057A07CE6AF00F6D23
mso2016-kb5002033-fullfile-x64-glb.exe A0F572961F560584C4124126BC0EC62914CBD68A58A37E1921D5BD7D766DF7A4

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.

__

For all supported x86-based versions of Office 2016

File identifier File name File version File size Date Time
firstrun.exe firstrun.exe 16.0.5149.1000 774440 5-Dec-21 10:16
msointl.dll.x86.1025 msointl.dll 16.0.4927.1000 3287904 5-Dec-21 10:02
msointl.dll.x86.1026 msointl.dll 16.0.4927.1000 1886048 5-Dec-21 10:00
msointl.dll.x86.1027 msointl.dll 16.0.4927.1000 1817952 5-Dec-21 10:18
msointl.dll.x86.1029 msointl.dll 16.0.4927.1000 1928032 5-Dec-21 10:03
msointl.dll.x86.1030 msointl.dll 16.0.4927.1000 1758040 5-Dec-21 10:03
msointl.dll.x86.1031 msointl.dll 16.0.4927.1000 1948216 5-Dec-21 10:02
msointl.dll.x86.1032 msointl.dll 16.0.4927.1000 2057048 5-Dec-21 10:03
msointl.dll.x86.3082 msointl.dll 16.0.4927.1000 1826360 5-Dec-21 10:03
msointl.dll.x86.1061 msointl.dll 16.0.4927.1000 1731664 5-Dec-21 10:00
msointl.dll.x86.1069 msointl.dll 16.0.4927.1000 1740640 5-Dec-21 10:18
msointl.dll.x86.1035 msointl.dll 16.0.4927.1000 1738504 5-Dec-21 10:03
msointl.dll.x86.1036 msointl.dll 16.0.4927.1000 1975360 5-Dec-21 10:03
msointl.dll.x86.1110 msointl.dll 16.0.4927.1000 1774648 5-Dec-21 10:18
msointl.dll.x86.1095 msointl.dll 16.0.4927.1000 1830688 5-Dec-21 10:18
msointl.dll.x86.1037 msointl.dll 16.0.4927.1000 2907936 5-Dec-21 10:03
msointl.dll.x86.1081 msointl.dll 16.0.4927.1000 1952312 5-Dec-21 10:03
msointl.dll.x86.1050 msointl.dll 16.0.4927.1000 1742088 5-Dec-21 10:03
msointl.dll.x86.1038 msointl.dll 16.0.4927.1000 1951584 5-Dec-21 10:00
msointl.dll.x86.1057 msointl.dll 16.0.4927.1000 1621848 5-Dec-21 10:00
msointl.dll.x86.1040 msointl.dll 16.0.4927.1000 1766240 5-Dec-21 10:03
msointl.dll.x86.1041 msointl.dll 16.0.4927.1000 2012512 5-Dec-21 10:02
msointl.dll.x86.1087 msointl.dll 16.0.4927.1000 2103648 5-Dec-21 10:03
msointl.dll.x86.1099 msointl.dll 16.0.4927.1000 1940320 5-Dec-21 10:19
msointl.dll.x86.1042 msointl.dll 16.0.4927.1000 2768736 5-Dec-21 10:03
msointl.dll.x86.1063 msointl.dll 16.0.4927.1000 1845808 5-Dec-21 10:03
msointl.dll.x86.1062 msointl.dll 16.0.4927.1000 1832016 5-Dec-21 10:03
msointl.dll.x86.1086 msointl.dll 16.0.4927.1000 1649232 5-Dec-21 10:00
msointl.dll.x86.1044 msointl.dll 16.0.4927.1000 1721624 5-Dec-21 10:03
msointl.dll.x86.1043 msointl.dll 16.0.4927.1000 1771264 5-Dec-21 10:03
msointl.dll.x86.1045 msointl.dll 16.0.4927.1000 1917280 5-Dec-21 10:03
msointl.dll.x86.1046 msointl.dll 16.0.4927.1000 1829656 5-Dec-21 10:03
msointl.dll.x86.2070 msointl.dll 16.0.4927.1000 1836312 5-Dec-21 10:03
msointl.dll.x86.1048 msointl.dll 16.0.4927.1000 1963064 5-Dec-21 10:03
msointl.dll.x86.1049 msointl.dll 16.0.4927.1000 1904384 5-Dec-21 10:03
msointl.dll.x86.1051 msointl.dll 16.0.4927.1000 1971552 5-Dec-21 10:00
msointl.dll.x86.1060 msointl.dll 16.0.4927.1000 1807712 5-Dec-21 10:00
msointl.dll.x86.2074 msointl.dll 16.0.4927.1000 1765936 5-Dec-21 10:03
msointl.dll.x86.9242 msointl.dll 16.0.4927.1000 1794912 5-Dec-21 10:03
msointl.dll.x86.1053 msointl.dll 16.0.4927.1000 1734912 5-Dec-21 10:03
msointl.dll.x86.1054 msointl.dll 16.0.4927.1000 1827376 5-Dec-21 10:03
msointl.dll.x86.1055 msointl.dll 16.0.4927.1000 1998680 5-Dec-21 10:03
msointl.dll.x86.1058 msointl.dll 16.0.4927.1000 1891896 5-Dec-21 10:03
msointl.dll.x86.1066 msointl.dll 16.0.4927.1000 2005552 5-Dec-21 10:00
msointl.dll.x86.2052 msointl.dll 16.0.4927.1000 2321704 5-Dec-21 10:03
msointl.dll.x86.1028 msointl.dll 16.0.4927.1000 2329384 5-Dec-21 10:03
msores.dll msores.dll 16.0.4795.1000 81683304 5-Dec-21 10:15
msores.dll.x86 msores.dll 16.0.4795.1000 81683304 5-Dec-21 10:28
mso.dll.x86 mso.dll 16.0.5254.1001 14423896 6-Dec-21 11:43
msointl.dll.x86.1033 msointl.dll 16.0.4927.1000 1539640 5-Dec-21 10:15

__

For all supported x64-based versions of Office 2016

File identifier File name File version File size Date Time
firstrun.exe firstrun.exe 16.0.5149.1000 816928 5-Dec-21 10:26
msointl.dll.x64.1025 msointl.dll 16.0.5254.1001 3324784 6-Dec-21 12:15
msointl.dll.x64.1026 msointl.dll 16.0.5254.1001 1911192 6-Dec-21 11:51
msointl.dll.x64.1027 msointl.dll 16.0.5254.1001 1842032 6-Dec-21 12:08
msointl.dll.x64.1029 msointl.dll 16.0.5254.1001 1952112 6-Dec-21 12:15
msointl.dll.x64.1030 msointl.dll 16.0.5254.1001 1782128 6-Dec-21 12:15
msointl.dll.x64.1031 msointl.dll 16.0.5254.1001 1972592 6-Dec-21 12:14
msointl.dll.x64.1032 msointl.dll 16.0.5254.1001 2081648 6-Dec-21 12:15
msointl.dll.x64.3082 msointl.dll 16.0.5254.1001 1850736 6-Dec-21 12:14
msointl.dll.x64.1061 msointl.dll 16.0.5254.1001 1755504 6-Dec-21 11:51
msointl.dll.x64.1069 msointl.dll 16.0.5254.1001 1764720 6-Dec-21 12:08
msointl.dll.x64.1035 msointl.dll 16.0.5254.1001 1762672 6-Dec-21 12:15
msointl.dll.x64.1036 msointl.dll 16.0.5254.1001 1999232 6-Dec-21 12:14
msointl.dll.x64.1110 msointl.dll 16.0.5254.1001 1799024 6-Dec-21 12:09
msointl.dll.x64.1095 msointl.dll 16.0.5254.1001 1854832 6-Dec-21 12:09
msointl.dll.x64.1037 msointl.dll 16.0.5254.1001 2944824 6-Dec-21 12:15
msointl.dll.x64.1081 msointl.dll 16.0.5254.1001 1976688 6-Dec-21 12:15
msointl.dll.x64.1050 msointl.dll 16.0.5254.1001 1766256 6-Dec-21 12:15
msointl.dll.x64.1038 msointl.dll 16.0.5254.1001 1977792 6-Dec-21 11:51
msointl.dll.x64.1057 msointl.dll 16.0.5254.1001 1645936 6-Dec-21 11:51
msointl.dll.x64.1040 msointl.dll 16.0.5254.1001 1791896 6-Dec-21 12:14
msointl.dll.x64.1041 msointl.dll 16.0.5254.1001 2036592 6-Dec-21 12:14
msointl.dll.x64.1087 msointl.dll 16.0.5254.1001 2128240 6-Dec-21 12:15
msointl.dll.x64.1099 msointl.dll 16.0.5254.1001 1964400 6-Dec-21 12:09
msointl.dll.x64.1042 msointl.dll 16.0.5254.1001 2794392 6-Dec-21 12:15
msointl.dll.x64.1063 msointl.dll 16.0.5254.1001 1869680 6-Dec-21 12:15
msointl.dll.x64.1062 msointl.dll 16.0.5254.1001 1855856 6-Dec-21 12:15
msointl.dll.x64.1086 msointl.dll 16.0.5254.1001 1673584 6-Dec-21 11:51
msointl.dll.x64.1044 msointl.dll 16.0.5254.1001 1745264 6-Dec-21 12:15
msointl.dll.x64.1043 msointl.dll 16.0.5254.1001 1795440 6-Dec-21 12:15
msointl.dll.x64.1045 msointl.dll 16.0.5254.1001 1941360 6-Dec-21 12:15
msointl.dll.x64.1046 msointl.dll 16.0.5254.1001 1853808 6-Dec-21 12:15
msointl.dll.x64.2070 msointl.dll 16.0.5254.1001 1860464 6-Dec-21 12:15
msointl.dll.x64.1048 msointl.dll 16.0.5254.1001 1986928 6-Dec-21 12:15
msointl.dll.x64.1049 msointl.dll 16.0.5254.1001 1928048 6-Dec-21 12:15
msointl.dll.x64.1051 msointl.dll 16.0.5254.1001 1996144 6-Dec-21 11:51
msointl.dll.x64.1060 msointl.dll 16.0.5254.1001 1832304 6-Dec-21 11:51
msointl.dll.x64.2074 msointl.dll 16.0.5254.1001 1790320 6-Dec-21 12:15
msointl.dll.x64.9242 msointl.dll 16.0.5254.1001 1818992 6-Dec-21 12:15
msointl.dll.x64.1053 msointl.dll 16.0.5254.1001 1759088 6-Dec-21 12:15
msointl.dll.x64.1054 msointl.dll 16.0.5254.1001 1851248 6-Dec-21 12:15
msointl.dll.x64.1055 msointl.dll 16.0.5254.1001 2023280 6-Dec-21 12:15
msointl.dll.x64.1058 msointl.dll 16.0.5254.1001 1915760 6-Dec-21 12:15
msointl.dll.x64.1066 msointl.dll 16.0.5254.1001 2029936 6-Dec-21 11:51
msointl.dll.x64.2052 msointl.dll 16.0.5254.1001 2348424 6-Dec-21 12:15
msointl.dll.x64.1028 msointl.dll 16.0.5254.1001 2353976 6-Dec-21 12:15
msointl.dll.x86.1025 msointl.dll 16.0.4927.1000 3287904 5-Dec-21 10:02
msointl.dll.x86.1026 msointl.dll 16.0.4927.1000 1886048 5-Dec-21 10:00
msointl.dll.x86.1029 msointl.dll 16.0.4927.1000 1928032 5-Dec-21 10:03
msointl.dll.x86.1030 msointl.dll 16.0.4927.1000 1758040 5-Dec-21 10:03
msointl.dll.x86.1031 msointl.dll 16.0.4927.1000 1948216 5-Dec-21 10:02
msointl.dll.x86.1032 msointl.dll 16.0.4927.1000 2057048 5-Dec-21 10:03
msointl.dll.x86.3082 msointl.dll 16.0.4927.1000 1826360 5-Dec-21 10:03
msointl.dll.x86.1061 msointl.dll 16.0.4927.1000 1731664 5-Dec-21 10:00
msointl.dll.x86.1035 msointl.dll 16.0.4927.1000 1738504 5-Dec-21 10:03
msointl.dll.x86.1036 msointl.dll 16.0.4927.1000 1975360 5-Dec-21 10:03
msointl.dll.x86.1037 msointl.dll 16.0.4927.1000 2907936 5-Dec-21 10:03
msointl.dll.x86.1081 msointl.dll 16.0.4927.1000 1952312 5-Dec-21 10:03
msointl.dll.x86.1050 msointl.dll 16.0.4927.1000 1742088 5-Dec-21 10:03
msointl.dll.x86.1038 msointl.dll 16.0.4927.1000 1951584 5-Dec-21 10:00
msointl.dll.x86.1057 msointl.dll 16.0.4927.1000 1621848 5-Dec-21 10:00
msointl.dll.x86.1040 msointl.dll 16.0.4927.1000 1766240 5-Dec-21 10:03
msointl.dll.x86.1041 msointl.dll 16.0.4927.1000 2012512 5-Dec-21 10:02
msointl.dll.x86.1087 msointl.dll 16.0.4927.1000 2103648 5-Dec-21 10:03
msointl.dll.x86.1042 msointl.dll 16.0.4927.1000 2768736 5-Dec-21 10:03
msointl.dll.x86.1063 msointl.dll 16.0.4927.1000 1845808 5-Dec-21 10:03
msointl.dll.x86.1062 msointl.dll 16.0.4927.1000 1832016 5-Dec-21 10:03
msointl.dll.x86.1086 msointl.dll 16.0.4927.1000 1649232 5-Dec-21 10:00
msointl.dll.x86.1044 msointl.dll 16.0.4927.1000 1721624 5-Dec-21 10:03
msointl.dll.x86.1043 msointl.dll 16.0.4927.1000 1771264 5-Dec-21 10:03
msointl.dll.x86.1045 msointl.dll 16.0.4927.1000 1917280 5-Dec-21 10:03
msointl.dll.x86.1046 msointl.dll 16.0.4927.1000 1829656 5-Dec-21 10:03
msointl.dll.x86.2070 msointl.dll 16.0.4927.1000 1836312 5-Dec-21 10:03
msointl.dll.x86.1048 msointl.dll 16.0.4927.1000 1963064 5-Dec-21 10:03
msointl.dll.x86.1049 msointl.dll 16.0.4927.1000 1904384 5-Dec-21 10:03
msointl.dll.x86.1051 msointl.dll 16.0.4927.1000 1971552 5-Dec-21 10:00
msointl.dll.x86.1060 msointl.dll 16.0.4927.1000 1807712 5-Dec-21 10:00
msointl.dll.x86.2074 msointl.dll 16.0.4927.1000 1765936 5-Dec-21 10:03
msointl.dll.x86.9242 msointl.dll 16.0.4927.1000 1794912 5-Dec-21 10:03
msointl.dll.x86.1053 msointl.dll 16.0.4927.1000 1734912 5-Dec-21 10:03
msointl.dll.x86.1054 msointl.dll 16.0.4927.1000 1827376 5-Dec-21 10:03
msointl.dll.x86.1055 msointl.dll 16.0.4927.1000 1998680 5-Dec-21 10:03
msointl.dll.x86.1058 msointl.dll 16.0.4927.1000 1891896 5-Dec-21 10:03
msointl.dll.x86.1066 msointl.dll 16.0.4927.1000 2005552 5-Dec-21 10:00
msointl.dll.x86.2052 msointl.dll 16.0.4927.1000 2321704 5-Dec-21 10:03
msointl.dll.x86.1028 msointl.dll 16.0.4927.1000 2329384 5-Dec-21 10:03
conversion.office.msores.dll msores.dll 16.0.4795.1000 81683088 5-Dec-21 10:20
msores.dll msores.dll 16.0.4795.1000 81683088 5-Dec-21 10:15
ppt.conversion.msores.dll msores.dll 16.0.4795.1000 81683088
ppt.edit.msores.dll msores.dll 16.0.4795.1000 81683088
wac.office.msores.dll msores.dll 16.0.4795.1000 81683088
msores.dll msores.dll 16.0.4795.1000 81683304 5-Dec-21 10:15
msores.dll.x86 msores.dll 16.0.4795.1000 81683304 5-Dec-21 10:28
mso.dll.x64 mso.dll 16.0.5254.1001 19881848 6-Dec-21 11:46
mso.dll.x86 mso.dll 16.0.5254.1001 14423896 6-Dec-21 11:43
msointl.dll.x64.1033 msointl.dll 16.0.4927.1000 1564424 5-Dec-21 10:21
msointl.dll.x86.1033 msointl.dll 16.0.4927.1000 1539640 5-Dec-21 10:15

Information about protection and security

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

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

5.7 Medium

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

0.002 Low

EPSS

Percentile

54.4%