Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2023-21763

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Exchange Server 2019 Cumulative Update 11
Microsoft Exchange Server 2019 Cumulative Update 12
Microsoft Exchange Server 2016 Cumulative Update 23
Vendor
CVE Published:
10 January 2023

What is CVE-2023-21763?

This vulnerability in Microsoft Exchange Server allows attackers to gain elevated privileges, potentially enabling unauthorized actions within the system. Organizations must apply the necessary updates to mitigate the risk posed by this flaw and safeguard their data integrity. For detailed information and remediation steps, refer to the Microsoft advisory.

Affected Version(s)

Microsoft Exchange Server 2016 Cumulative Update 23 x64-based Systems 15.01.0 < 15.01.2507.017

Microsoft Exchange Server 2019 Cumulative Update 11 x64-based Systems 15.02.0 < 15.02.0986.037

Microsoft Exchange Server 2019 Cumulative Update 12 x64-based Systems 15.02.0 < 15.02.1118.021

References

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

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.