Microsoft Microsoft Exchange Server 2019 Cumulative Update 4

• CVE-2021-27065 High 7.8 Exploited Microsoft Exchange Server Remote Code Execution Vulnerability 99.9%
• CVE-2021-26858 High 7.8 Exploited Microsoft Exchange Server Remote Code Execution Vulnerability 93.7%
• CVE-2021-26855 Critical 9.1 Exploited Microsoft Exchange Server Remote Code Execution Vulnerability 100.0%
• CVE-2021-26857 High 7.8 Exploited Microsoft Exchange Server Remote Code Execution Vulnerability 95.8%
• CVE-2020-0688 High 8.8 Exploited A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'. 100.0%
• CVE-2020-0903 Medium 5.4 A cross-site-scripting (XSS) vulnerability exists when Microsoft Exchange Server does not properly sanitize a specially crafted web request to an affected Exchange server, aka 'Microsoft Exchange Serv 1.6%
• CVE-2020-0692 Unrated An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka 'Microsoft Exchange Server Elevation of Privilege Vulnerability'. 3.3%