Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2023-21709

9.8CRITICAL

Key Information:

Vendor

Microsoft
Status
Microsoft Exchange Server 2019 Cumulative Update 12
Microsoft Exchange Server 2016 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 13
Vendor
CVE Published:
8 August 2023

What is CVE-2023-21709?

The vulnerability in Microsoft Exchange Server allows attackers to gain elevated privileges, potentially compromising sensitive data and system integrity. It is crucial for organizations to apply the latest updates provided by Microsoft to mitigate this vulnerability and enhance their cybersecurity posture.

Affected Version(s)

Microsoft Exchange Server 2016 Cumulative Update 23 x64-based Systems 15.01.0 < 15.01.2507.032

Microsoft Exchange Server 2019 Cumulative Update 12 x64-based Systems 15.02.0 < 15.02.1118.037

Microsoft Exchange Server 2019 Cumulative Update 13 x64-based Systems 15.02.0 < 15.02.1258.025

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

EPSS Score

13% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2023-21709 : Microsoft Exchange Server Elevation of Privilege Vulnerability