Description of the security update for Office Online Server: December 11, 2018

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-2018-8627 and  Microsoft Common Vulnerabilities and Exposures CVE-2018-8628.

Note To apply this security update, you must have the release version of Office Online Server installed on the computer.

How to get and install the update

Method 1: Microsoft Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, 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.

Update information

Security update deployment information

For deployment information about this update, see security update deployment information: December 11, 2018.

Security update replacement information

This security update doesn't replace any previously released security update.

File information

File hash information

File name

SHA1 hash

SHA256 hash

wacserver2019-kb4011027-fullfile-x64-glb.exe

AEC4C49C4016A0C3CF35AD6283CB8F63972B173C

7B00F0E20DC6645876448EFB958DB56932CD25C14AB6765857730A6A31A58C5D


File information

For the list of files that are included in the security update 4011027, download the file information.


How to get help and support for this security update

Protect yourself online and at home: Windows Security support 

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

Local support according to your country: International Support

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