KLA11553
Multiple vulnerabilities in Microsoft Exchange Server

Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to cause denial of service, spoof user interface.

Below is a complete list of vulnerabilities:

1. A denial of service vulnerability in Microsoft Exchange can be exploited remotely via specially crafted email to cause denial of service;
2. A spoofing vulnerability in Microsoft Exchange can be exploited remotely via specially crafted email to spoof user interface.

Microsoft Exchange Server 2019 Cumulative Update 1
Microsoft Exchange Server 2016 Cumulative Update 13
Microsoft Exchange Server 2019 Cumulative Update 2
Microsoft Exchange Server 2016 Cumulative Update 12

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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