KLA20155
Multiple vulnerabilities in Microsoft Exchange Server

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 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 Server can be exploited remotely to obtain sensitive information.

Microsoft Exchange Server 2016 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 12
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 11

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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