Main Vulnerability Database Vulnerabilities #VU165035

Race condition in Microsoft Windows and Windows Server - CVE-2026-118138

Published: November 11, 2026

Vulnerability identifier: #VU165035

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-2026-118138

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 and execute code in the security context of the NT AUTHORITYNetwork Service account.

The vulnerability exists due to improper synchronization of shared resources in Windows Client for NFS when executing concurrent operations. A local user can trigger a race condition to execute code with the privileges of the NT AUTHORITYNetwork Service account.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-118138

Install security update from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1607 10.0.14393.9688, 10 1809 10.0.17763.9487, 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822

External References

Related Security Bulletins