---
id: "CVE-2026-118141"
page: "https://infrastack.ai/live/CVE-2026-118141"
kind: "vulnerability"
aliases: ["CVE-2026-118141"]
title: "Windows Client for NFS: stack overflow lets a network attacker run code"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10/11 and Windows Server (Client for NFS)", "fixed": ["10.0.14393.9688", "10.0.17763.9487", "10.0.19044.7846", "10.0.19045.7846", "10.0.22631.7711", "10.0.26100.9974", "10.0.26200.9974", "10.0.28000.3501", "10.0.26300.9974", "10.0.20348.5870", "10.0.26100.33822"], "affected": "< fixed build per release", "ecosystem": "vendor"}]
ecosystems: []
tags: ["client-for-nfs", "infrastructure", "nfs", "windows", "windows-10", "windows-11", "windows-server"]
not_affected_if: ["client-for-nfs-not-installed"]
published_at: "2026-11-10T19:19:33+00:00"
first_seen_at: "2026-11-10T19:24:49+00:00"
updated_at: "2026-11-10T23:24:35+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118141", "first_seen_at": "2026-11-10T19:24:49+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/cve-2026-118141", "first_seen_at": "2026-11-10T23:24:35+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/cve-2026-118141", "https://radar.offseq.com/threat/cve-2026-118141-cwe-121-stack-based-buffer-overflow-in-microsoft-windows-10-version-1607-e0bfc73b1b2d0e7e"]}]
exploit_sources: []
---

# Windows Client for NFS: stack overflow lets a network attacker run code

Link for people: https://infrastack.ai/live/CVE-2026-118141 (this .md is for agents)

Windows Client for NFS has a stack-based buffer overflow that a remote, unauthenticated attacker can trigger over the network. Successful exploitation lets the attacker execute code on the affected Windows machine.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Windows 10/11 and Windows Server (Client for NFS) affected < fixed build per release fixed 10.0.14393.9688, 10.0.17763.9487, 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711, 10.0.26100.9974, 10.0.26200.9974, 10.0.28000.3501, 10.0.26300.9974, 10.0.20348.5870, 10.0.26100.33822

## How to check

Run winver or [System.Environment]::OSVersion and compare the build (e.g. 10.0.22631.x) with the fixed build for your release. Then check whether the Client for NFS feature is installed: Get-WindowsOptionalFeature -Online | Where FeatureName -like '*NFS*' (or DISM /online /Get-Features | findstr NFS). If it is not installed, the vulnerable component is not present (default state not confirmed from a source). Also check Server for NFS separately; only Client for NFS is named in this CVE.

## Fix

Install the November 2026 Windows cumulative update: Win10 1607/Server 2016 10.0.14393.9688; 1809/Server 2019 10.0.17763.9487; Win10 21H2 10.0.19044.7846; 22H2 10.0.19045.7846; Win11 23H2 10.0.22631.7711; 24H2 10.0.26100.9974; 25H2 10.0.26200.9974; 26H1 10.0.28000.3501; 26H2 10.0.26300.9974; Server 2022 10.0.20348.5870; Server 2025 10.0.26100.33822.

## Timeline

- 2026-11-10T19:24:49+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118141
- 2026-11-10T23:24:35+00:00 analyst https://nvd.nist.gov/vuln/detail/cve-2026-118141 — Build numbers from Microsoft CNA data as shown on NVD; MSRC page returned empty so nothing marked verified. No exploitation or PoC found (OffSeq, Nov 10). X not checked. Default-enabled state of Client for NFS not confirmed from a source.

## Documents

- [describes] NVD CVE-2026-118141 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/cve-2026-118141
- [mentions] OffSeq Threat Radar CVE-2026-118141 https://radar.offseq.com/threat/cve-2026-118141-cwe-121-stack-based-buffer-overflow-in-microsoft-windows-10-version-1607-e0bfc73b1b2d0e7e

## From the sources

Stack-based buffer overflow in Windows Client for NFS allows an unauthorized attacker to execute code over a network.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_