Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to spoof user interface, gain privileges, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. A spoofing vulnerability in Microsoft Exchange Server can be exploited remotely via specially crafted web to spoof user interface.
2. An elevation of privilege vulnerability in Microsoft Exchange Server can be exploited remotely to gain privileges.
3. An information disclosure vulnerability in Microsoft Exchange can be exploited remotely to obtain sensitive information.

Microsoft Exchange Server 2016 Cumulative Update 13
Microsoft Exchange Server 2019 Cumulative Update 1
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 2
Microsoft Exchange Server 2016 Cumulative Update 12
Microsoft Exchange Server 2010 Service Pack 3
Microsoft Office 2016 (32-bit edition)
Microsoft Outlook 2013 Service Pack 1 (32-bit editions)
Microsoft Lync Basic 2013 Service Pack 1 (64-bit)
Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
Skype for Business 2016 (64-bit)
Microsoft Office 2016 (64-bit edition)
Microsoft Office 2016 for Mac
Skype for Business 2016 (32-bit)
Microsoft Office 2019 for Mac
Microsoft Lync Basic 2013 Service Pack 1 (32-bit)
Outlook for iOS
Microsoft Outlook 2016 (64-bit edition)
Microsoft Outlook 2010 Service Pack 2 (64-bit editions)
Microsoft Lync 2013 Service Pack 1 (32-bit)
Office 365 ProPlus for 32-bit Systems
Microsoft Outlook 2016 (32-bit edition)
Microsoft Outlook 2010 Service Pack 2 (32-bit editions)
Mail and Calendar
Microsoft Outlook for Android
Office 365 ProPlus for 64-bit Systems
Microsoft Lync 2013 Service Pack 1 (64-bit)
Microsoft Office 2019 for 32-bit editions
Microsoft Office 2013 RT Service Pack 1
Microsoft Office 2019 for 64-bit editions
Microsoft Office 2013 Service Pack 1 (32-bit editions)
Skype for Business 2016 Basic (64-bit)
Microsoft Office 2013 Service Pack 1 (64-bit editions)
Skype for Business 2016 Basic (32-bit)

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

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