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.
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 hash 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