Main Vulnerability Database Vulnerabilities #VU71003

Race condition in Microsoft Windows and Windows Server - CVE-2023-21771

Published: January 10, 2023

Vulnerability identifier: #VU71003

CSH Severity: Low

CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-21771

CWE-ID: CWE-362

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 a race condition in Windows Local Session Manager (LSM). A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2023-21771

Install updates from vendor's website.

External References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21771

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