CVE-2026-71330: Microsoft Windows Services for NFS ONCRPC XDR Driver information disclosure

CVE-2026-71330 · Severity: high · CVSS 7.5 · Published 2026-09-08

Windows Services for NFS provides network file sharing capabilities for Windows systems. A vulnerability in its ONCRPC XDR Driver allows an unauthorized attacker to disclose sensitive system information over the network, potentially exposing configuration details and other confidential data without requiring authentication or special privileges.

Technologies: Microsoft Windows Services for NFS. Vendors: Microsoft.

Quick answers

Is CVE-2026-71330 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-71330 being exploited in the wild.
How severe is CVE-2026-71330?
High severity, with a CVSS score of 7.5, published 8 September 2026.
Which products and versions are affected?
Microsoft Windows Services for NFS.
Is there a fix for CVE-2026-71330?
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-2026-71330 attacked?
It is attacked over the network.
Am I affected by CVE-2026-71330?
Check whether you run Microsoft Windows Services 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

This is an information disclosure vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) in the ONCRPC XDR Driver component of Windows Services for NFS. The vulnerability allows unauthorized attackers to access sensitive system information over a network without authentication. The attack vector is network-based and does not require user interaction or local access. An attacker can exploit this to retrieve confidential system details that could be used for reconnaissance or further targeted attacks.

Affected products

  • Microsoft Windows Services for NFS

Timeline

  • 2026-09-08: disclosed

References

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