Microsoft » Exchange Server : Security Vulnerabilities, CVEs, Published In 2021 CVSS score >= 4
CVE-2021-42321
Known exploited
Public exploit
Used for ransomware
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
8.8
EPSS Score
96.51%
Published
2021-11-10
Updated
2023-12-28
CISA KEV Added
2021-11-17
Microsoft Exchange Server Spoofing Vulnerability
Max CVSS
6.5
EPSS Score
0.11%
Published
2021-11-10
Updated
2023-12-28
Microsoft Exchange Server Spoofing Vulnerability
Max CVSS
6.5
EPSS Score
0.32%
Published
2021-10-13
Updated
2023-08-01
Microsoft Exchange Server Spoofing Vulnerability
Max CVSS
6.5
EPSS Score
96.17%
Published
2021-11-10
Updated
2023-12-28
Microsoft Exchange Server Elevation of Privilege Vulnerability
Max CVSS
8.0
EPSS Score
0.04%
Published
2021-10-13
Updated
2023-08-01
CVE-2021-34523
Known exploited
Public exploit
Used for ransomware
Microsoft Exchange Server Elevation of Privilege Vulnerability
Max CVSS
9.8
EPSS Score
72.23%
Published
2021-07-14
Updated
2024-02-13
CISA KEV Added
2021-11-03
CVE-2021-34473
Known exploited
Public exploit
Used for ransomware
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
10.0
EPSS Score
97.29%
Published
2021-07-14
Updated
2023-12-28
CISA KEV Added
2021-11-03
Microsoft Exchange Server Elevation of Privilege Vulnerability
Max CVSS
8.0
EPSS Score
0.05%
Published
2021-07-14
Updated
2023-12-28
Microsoft Exchange Server Denial of Service Vulnerability
Max CVSS
7.5
EPSS Score
0.12%
Published
2021-10-13
Updated
2023-08-01
Microsoft Exchange Server Elevation of Privilege Vulnerability
Max CVSS
8.0
EPSS Score
0.04%
Published
2021-07-14
Updated
2023-12-28
CVE-2021-33766
Known exploited
Microsoft Exchange Server Information Disclosure Vulnerability
Max CVSS
7.5
EPSS Score
50.27%
Published
2021-07-14
Updated
2023-12-28
CISA KEV Added
2022-01-18
Microsoft Exchange Server Spoofing Vulnerability
Max CVSS
8.1
EPSS Score
7.28%
Published
2021-05-11
Updated
2023-08-02
CVE-2021-31207
Known exploited
Public exploit
Used for ransomware
Microsoft Exchange Server Security Feature Bypass Vulnerability
Max CVSS
7.2
EPSS Score
97.13%
Published
2021-05-11
Updated
2023-08-02
CISA KEV Added
2021-11-03
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
8.0
EPSS Score
26.27%
Published
2021-07-14
Updated
2023-12-28
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
7.8
EPSS Score
1.03%
Published
2021-05-11
Updated
2023-08-02
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
7.2
EPSS Score
1.26%
Published
2021-07-14
Updated
2023-12-28
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
8.8
EPSS Score
92.10%
Published
2021-05-11
Updated
2023-08-02
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
9.0
EPSS Score
0.40%
Published
2021-04-13
Updated
2023-12-29
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
9.0
EPSS Score
1.26%
Published
2021-04-13
Updated
2023-12-29
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
10.0
EPSS Score
4.45%
Published
2021-04-13
Updated
2023-12-29
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
10.0
EPSS Score
4.45%
Published
2021-04-13
Updated
2023-12-29
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
9.1
EPSS Score
3.56%
Published
2021-03-03
Updated
2023-12-29
CVE-2021-27065
Known exploited
Public exploit
Used for ransomware
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
7.8
EPSS Score
96.36%
Published
2021-03-03
Updated
2023-12-29
CISA KEV Added
2021-11-03
CVE-2021-26858
Known exploited
Used for ransomware
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
7.8
EPSS Score
42.09%
Published
2021-03-03
Updated
2023-12-29
CISA KEV Added
2021-11-03
CVE-2021-26857
Known exploited
Used for ransomware
Microsoft Exchange Server Remote Code Execution Vulnerability
Max CVSS
7.8
EPSS Score
68.38%
Published
2021-03-03
Updated
2023-12-29
CISA KEV Added
2021-11-03