Permissions, Privileges, and Access Controls in Microsoft Exchange Server - CVE-2023-21764
Published: January 10, 2023
Vulnerability identifier: #VU70909
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-21764
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improperly imposed security restrictions. A local user can execute arbitrary code with SYSTEM privileges.
Affected software
Microsoft Exchange Server
How to mitigate CVE-2023-21764
Install updates from vendor's website.
Microsoft Exchange Server - addressed in versions 2016 CU23 Jan23SU 15.01.2507.017, 2019 CU11 Jan23SU 15.02.0986.037, 2019 CU12 Jan23SU 15.02.1118.021