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-2017-8509, Microsoft Common Vulnerabilities and Exposures CVE-2017-8511, and Microsoft Common Vulnerabilities and Exposures CVE-2017-8512.
Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft Office Web Apps Server 2013 installed on the computer.
Security update deployment information
For deployment information about this update, see security update deployment information: June 13, 2017.
Security update replacement information
This security update replaces previously released security update KB3191888.
File hash information
|Package Name||Package Hash SHA 1||Package Hash SHA 2|
For a list of the files that are provided in this update KB3203391, download the file information for update KB3203391.
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