Race condition in Microsoft Windows and Windows Server - CVE-2025-62217

Vulnerability identifier: #VU118292

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-2025-62217

CWE-ID: CWE-362

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition in Windows Ancillary Function Driver for WinSock. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.6575, 10 22H2 10.0.19045.6575, 10 1607 10.0.14393.8594, 10 1809 10.0.17763.8027, 11 23H2 10.0.22631.6199, 11 24H2 10.0.26100.7092, 11 24H2 10.0.26100.7171
Windows Server - addressed in versions 2008 R2 6.1.7601.28021, 2008 6.0.6003.23624, 2012 R2 6.3.9600.22869, 2012 6.2.9200.25768, 2016 10.0.14393.8594, 2019 10.0.17763.8027, 2022 23H2 10.0.25398.1965, 2022 10.0.20348.4346, 2022 10.0.20348.4405, 2025 10.0.26100.7092, 2025 10.0.26100.7171

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-62217

• Multiple vulnerabilities in Microsoft Windows Ancillary Function Driver for WinSock