Improper web requests handling was found in Microsoft Exchange Server at Outlook Web Access. By exploiting this vulnerability malicious users can spoof user interface. This vulnerability can be exploited remotely via a specially designed email with malicious link.

Microsoft Exchange Server 2013 Service Pack 1
Microsoft Exchange Server 2013 Cumulative Update 10
Microsoft Exchange Server 2013 Cumulative Update 11
Microsoft Exchange Server 2016

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

CVE-2016-0032
CVE-2016-0031
CVE-2016-0030
CVE-2016-0029

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