KLA10658
Multiple vulnerabilities in Microsoft Exchange Server

Multiple serious vulnerabilities have been found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to spoof user interface or obtain sensitive information.

Below is a complete list of vulnerabilities

1. Improper web request handling at Outlook Web Access can be exploited remotely via a specially designed web application request to obtain sensitive information;
2. Improper emails sanitization at Outlook Web Access can be exploited remotely via a specially designed email to spoof user interface.

Exchange Server 2013 Cumulative Update 8
Exchange Server 2013 Cumulative Update 9
Exchange Server 2013 Service Pack 1

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)