microsoft / Microsoft Exchange Server 2013 Cumulative Update 22

4 vulnerabilities across affected versions.

CVE-2021-26855CRITICAL9.115.00.0 – 15.00.1473.006

CVE-2021-26857HIGH7.815.00.0 – 15.00.1473.006

CVE-2021-26858HIGH7.815.00.0 – 15.00.1473.006

CVE-2021-27065HIGH7.815.00.0 – 15.00.1473.006