#VU70900 Buffer overflow in Windows and Windows Server - CVE-2023-21674
Published: January 10, 2023 / Updated: May 13, 2024
Vulnerability identifier: #VU70900
Vulnerability risk: High
CVSSv4.0: 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/E:A/U:Amber
CVE-ID: CVE-2023-21674
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the Windows Advanced Local Procedure Call (ALPC). A local user can trigger memory corruption and execute arbitrary code with SYSTEM privileges.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install updates from vendor's website.