KLA10609
Multiple vulnerabilities in Microsoft Lync Server

Multiple serious vulnerabilities have been found in Microsoft Lync Server. Malicious users can exploit these vulnerabilities to inject arbitrary code or cause denial of service.

Below is a complete list of vulnerabilities

1. XSS vulnerability can be exploited remotely via a specially designed URL;
2. Improper exceptions handling can be exploited remotely via a specially designed call;
3. An unknown vulnerability can be exploited remotely via a specially designed request.

Microsoft Lync Server 2010 and 2013

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