Microsoft Exchange Server Denial of Service Vulnerability
CVE-2021-34453

7.5HIGH

Key Information:

Vendor
Microsoft
Status
Microsoft Exchange Server 2019 Cumulative Update 11
Microsoft Exchange Server 2019 Cumulative Update 10
Microsoft Exchange Server 2016 Cumulative Update 21
Microsoft Exchange Server 2016 Cumulative Update 22
Vendor
CVE Published:
13 October 2021

Summary

Microsoft Exchange Server Denial of Service Vulnerability

Affected Version(s)

Microsoft Exchange Server 2016 Cumulative Update 21 x64-based Systems 15.01.0 < 15.01.2308.015

Microsoft Exchange Server 2016 Cumulative Update 22 x64-based Systems 15.0.0 < 15.01.2375.012

Microsoft Exchange Server 2019 Cumulative Update 10 x64-based Systems 15.02.0 < 15.02.0922.014

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_MISC

EPSS Score

0% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database
.