Microsoft Exchange Server 2016 Cumulative Update 20

14 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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Critical 9.0

CVE-2021-34523 Exploited · Ransomware Public exploit EPSS 100%

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 Microsoft Exchange Server 2016 Cumulative Update 19 Microsoft Exchange Server 2019 Cumulative Update 8

Jul 14, 2021
KEV Nov 3, 2021
Critical 9.1

CVE-2021-34473 Exploited · Ransomware Public exploit Scanner template EPSS 100%

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 Microsoft Exchange Server 2019 Cumulative Update 8 Microsoft Exchange Server 2016 Cumulative Update 19

Jul 14, 2021
KEV Nov 3, 2021
High 7.3

CVE-2021-33766 Exploited Public exploit Scanner template EPSS 98%

Microsoft Exchange Server Information Disclosure Vulnerability

Microsoft Exchange Server Information Disclosure Vulnerability

Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 Microsoft Exchange Server 2016 Cumulative Update 19 Microsoft Exchange Server 2019 Cumulative Update 8

Jul 14, 2021
KEV Jan 18, 2022
High 7.2

CVE-2021-31196 Exploited EPSS 54%

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 Microsoft Exchange Server 2019 Cumulative Update 10 Microsoft Exchange Server 2016 Cumulative Update 21

Jul 14, 2021
KEV Aug 21, 2024
Medium 6.6

CVE-2021-31207 Exploited · Ransomware Public exploit EPSS 100%

Microsoft Exchange Server Security Feature Bypass Vulnerability

Microsoft Exchange Server Security Feature Bypass Vulnerability

Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 Microsoft Exchange Server 2016 Cumulative Update 19 Microsoft Exchange Server 2019 Cumulative Update 8

May 11, 2021
KEV Nov 3, 2021

Microsoft Exchange Server 2016 Cumulative Update 20

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server Information Disclosure Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server Security Feature Bypass Vulnerability