CVE-2016-3379
Cross-site scripting (XSS) vulnerability in Microsoft Exchange Server 2016 Cumulative Update 1 and 2 allows remote attackers to inject arbitrary web script or HTML via a meeting-invitation request, aka "Microsoft Exchange Elevation of Privilege Vulnerability."
Date published : 2016-09-14
http://www.securityfocus.com/bid/92836
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-108