Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21706

8.8HIGH

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 11
Microsoft Exchange Server 2013 Cumulative Update 23
Vendor
CVE Published:
14 February 2023

What is CVE-2023-21706?

A remote code execution vulnerability has been identified in Microsoft Exchange Server, allowing attackers to execute arbitrary code on affected systems. By exploiting this flaw, an unauthenticated attacker could potentially gain control over the server and its associated data. It is crucial for organizations using Exchange Server to assess their security posture and apply necessary patches to mitigate the risk.

Affected Version(s)

Microsoft Exchange Server 2013 Cumulative Update 23 x64-based Systems 15.00.0 < 15.00.1497.047

Microsoft Exchange Server 2016 Cumulative Update 23 x64-based Systems 15.01.0 < 15.01.2507.021

Microsoft Exchange Server 2019 Cumulative Update 11 x64-based Systems 15.02.0 < 15.02.0986.041

References

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

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2023-21706 : Microsoft Exchange Server Remote Code Execution Vulnerability