Cross-site scripting (XSS) vulnerability in Microsoft Lync Server 2013 allows remote attackers to inject arbitrary web script or HTML via a crafted URL, aka "Lync Server XSS Information Disclosure Vulnerability."
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-2625
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-104