This security update is rated Important for all supported editions of the following software: This security update is rated Critical for all supported editions of the following software: Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. This security update resolves vulnerabilities in Microsoft Office. Published: Septem| Updated: November 10, 2015 In this article Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3089664) Microsoft Security Bulletin MS15-099 - Critical