Microsoft Microsoft Exchange Server 2013 Cumulative Update 22

• 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%