Description of the security update for Word 2013: May 8, 2018

Applies to: Microsoft Office 2013 Service Pack 1Word 2013


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-2018-8161.

Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft Office 2013 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2013. It doesn't apply to the Office 2013 Click-to-Run editions, such as Microsoft Office 365 Home (see Determining your Office version).

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issue:
  • When you close an unsaved Information Rights Management (IRM) Office Open XML (OOXML) document, Word claims to be able to "keep unsaved changes," but the result is actually a corrupted .ASD file.

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: May 8, 2018.

Security update replacement information

This security update replaces previously released security update KB 4018347.

File hash information

Package name Package hash SHA 1 Package hash SHA 2
word2013-kb4018396-fullfile-x64-glb.exe 99EB773F6152DC7B117D95525CA331DB211540DC A43FEAAE0120760F1241A5FBEBF9C85A0316A498C04475625FBD050C5B5CBB55
word2013-kb4018396-fullfile-x86-glb.exe 6C08F835717DE1397D30BDE2123C5CFC65DD9DA3 A4FA377D5DE8909A90FB65689890A44D6ACC573D14ED18EB339218762AD4B7FB

File information

The English version of this security update has the file attributes (or later file 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.

How to get help and support for this security update

Help for installing updates: Windows Update: FAQ

Security solutions for IT professionals: TechNet 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