Quick answers
- Is CVE-2026-118138 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-118138 being exploited in the wild.
- How severe is CVE-2026-118138?
- High severity, with a CVSS score of 7.8, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Windows Client for NFS.
- Is there a fix for CVE-2026-118138?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-118138 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-118138?
- Check whether you run Microsoft Windows Client for NFS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A race condition exists in Windows Client for NFS due to improper synchronization when executing shared resources. An authorized attacker with local access can exploit this timing vulnerability to escalate privileges. The vulnerability requires local access and valid authentication credentials.
Affected products
- Microsoft Windows Client for NFS
Timeline
- 2026-11-10: disclosed