# CVE-2026-118141: Windows Client for NFS stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-118141-stack-based-buffer-overflow-in-windows-client-for-nfs-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-118141 · Severity: high · CVSS 8.8 · Published 2026-11-10

Windows Client for NFS is a network service that allows Windows systems to access files on NFS servers. A stack-based buffer overflow vulnerability allows an attacker to execute arbitrary code on affected systems over the network without authentication. This could lead to complete system compromise and lateral movement within a network.

Technologies: [Microsoft Windows Client for NFS](https://junglewise.ai/threats/technologies/windows-client-for-nfs). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-118141 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-118141 being exploited in the wild.

**How severe is CVE-2026-118141?** High severity, with a CVSS score of 8.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Client for NFS.

**Is there a fix for CVE-2026-118141?** 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-2026-118141 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-118141?** 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 stack-based buffer overflow exists in Windows Client for NFS that can be triggered remotely without authentication. The vulnerability allows an attacker to overwrite the stack and achieve arbitrary code execution. A patch from Microsoft is available.

## Affected products

- Microsoft Windows Client for NFS

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118141](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118141)

## Related threats

- [Microsoft Windows Client for NFS use after free privilege elevation](https://junglewise.ai/threats/cve-2026-95885-use-after-free-in-windows-client-for-nfs-allows-an-unauthorized)
- [Microsoft Windows Client for NFS use-after-free remote code execution](https://junglewise.ai/threats/cve-2026-88249-use-after-free-in-windows-client-for-nfs-allows-an-unauthorized)
- [Windows Client for NFS heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-122165-heap-based-buffer-overflow-in-windows-client-for-nfs-allows-an)
- [Microsoft Windows Client for NFS improper access control](https://junglewise.ai/threats/cve-2026-119404-improper-access-control-in-windows-client-for-nfs-allows-an)
- [Microsoft Windows Client for NFS race condition privilege escalation](https://junglewise.ai/threats/cve-2026-118138-concurrent-execution-using-shared-resource-with-improper)