---
id: "CVE-2026-118142"
page: "https://infrastack.ai/live/CVE-2026-118142"
kind: "vulnerability"
aliases: ["CVE-2026-118142"]
title: "Windows DFS: out-of-bounds read lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["active-directory", "dfs", "infrastructure", "windows"]
not_affected_if: ["non-windows-systems"]
published_at: "2026-11-10T19:19:34+00:00"
first_seen_at: "2026-11-10T19:24:49+00:00"
updated_at: "2026-11-10T23:24:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118142", "first_seen_at": "2026-11-10T19:24:49+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T23:24:21+00:00"}]
exploit_sources: []
---

# Windows DFS: out-of-bounds read lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-118142 (this .md is for agents)

A memory read past the end of a buffer in Windows Distributed File System lets an already-authorized local user elevate their privileges. An attacker who can log on to the machine could gain system-level control.

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

## How to check

Open the MSRC Security Update Guide page for CVE-2026-118142 in a browser and match your build (winver, or Get-ComputerInfo) to the listed KB. Fixed builds are not confirmed here. DFS Namespace role: Get-WindowsFeature FS-DFS-Namespace. Whether DFS must be enabled for the flaw to be reachable is unknown.

## Timeline

- 2026-11-10T19:24:49+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118142
- 2026-11-10T23:24:21+00:00 analyst — MSRC page is JS-only (web-cli empty, WebFetch title only) and browser-cli is out of credits, so no primary source was read. Affected builds, KB and whether DFS must be enabled are unconfirmed. Nothing verified.

## From the sources

Out-of-bounds read in Windows Distributed File System (DFS) allows an authorized attacker to elevate privileges locally.

---

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