Severity Rating: Critical
Revision Note: V2.2 (October 7, 2015): Added a footnote to the Microsoft Communication Platforms and Software table and an Update FAQ to explain that customers running affected editions of Microsoft Lync 2013 (Skype for Business) must install prerequisite updates before installing the 3055014 security update. See the Update FAQ for more information.
Summary: This security update resolves vulnerabilities in Microsoft Windows, Microsoft .NET Framework, Microsoft Office, Microsoft Lync, and Microsoft Silverlight. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits an untrusted webpage that contains embedded TrueType fonts.