---
id: "CVE-2026-119866"
page: "https://infrastack.ai/live/CVE-2026-119866"
kind: "vulnerability"
aliases: ["CVE-2026-119866"]
title: "Windows Device Association Service: use-after-free lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": "10.0.19045.0 - < 10.0.19045.7846", "ecosystem": "microsoft"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": "10.0.19044.0 - < 10.0.19044.7846", "ecosystem": "microsoft"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": "10.0.22631.0 - < 10.0.22631.7711", "ecosystem": "microsoft"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": "10.0.26100.0 - < 10.0.26100.9974", "ecosystem": "microsoft"}, {"name": "Windows 11 25H2", "fixed": ["10.0.26200.9974"], "affected": "10.0.26200.0 - < 10.0.26200.9974", "ecosystem": "microsoft"}, {"name": "Windows 11 26H1", "fixed": ["10.0.28000.3501"], "affected": "10.0.28000.0 - < 10.0.28000.3501", "ecosystem": "microsoft"}, {"name": "Windows 11 26H2", "fixed": ["10.0.26300.9974"], "affected": "10.0.26300.0 - < 10.0.26300.9974", "ecosystem": "microsoft"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": "10.0.20348.0 - < 10.0.20348.5870", "ecosystem": "microsoft"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": "10.0.26100.0 - < 10.0.26100.33822", "ecosystem": "microsoft"}]
ecosystems: []
tags: ["infrastructure", "local-privilege-escalation", "use-after-free", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:20:05+00:00"
first_seen_at: "2026-11-10T19:25:00+00:00"
updated_at: "2026-11-10T22:44:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119866", "first_seen_at": "2026-11-10T19:25:00+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/cve-2026-119866", "first_seen_at": "2026-11-10T22:44:46+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/cve-2026-119866"]}]
exploit_sources: []
---

# Windows Device Association Service: use-after-free lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119866 (this .md is for agents)

Use-after-free in the Windows Device Association Service lets an attacker who already has a low-privileged local account gain higher privileges (CVSS 7.0, high attack complexity). Microsoft's data lists Windows 10 21H2/22H2, Windows 11 23H2 to 26H2 and Server 2022/2025 as affected, with fixed builds. No exploitation reported.

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

## Affected

- microsoft:Windows 10 22H2 affected 10.0.19045.0 - < 10.0.19045.7846 fixed 10.0.19045.7846
- microsoft:Windows 10 21H2 affected 10.0.19044.0 - < 10.0.19044.7846 fixed 10.0.19044.7846
- microsoft:Windows 11 23H2 affected 10.0.22631.0 - < 10.0.22631.7711 fixed 10.0.22631.7711
- microsoft:Windows 11 24H2 affected 10.0.26100.0 - < 10.0.26100.9974 fixed 10.0.26100.9974
- microsoft:Windows 11 25H2 affected 10.0.26200.0 - < 10.0.26200.9974 fixed 10.0.26200.9974
- microsoft:Windows 11 26H1 affected 10.0.28000.0 - < 10.0.28000.3501 fixed 10.0.28000.3501
- microsoft:Windows 11 26H2 affected 10.0.26300.0 - < 10.0.26300.9974 fixed 10.0.26300.9974
- microsoft:Windows Server 2022 affected 10.0.20348.0 - < 10.0.20348.5870 fixed 10.0.20348.5870
- microsoft:Windows Server 2025 affected 10.0.26100.0 - < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

Run 'winver' or PowerShell '[System.Environment]::OSVersion.Version' and compare the build (10.0.<build>.<revision>) with the fixed builds in the product rows; a revision below the fixed one is exposed. Not confirmed from the MSRC page (could not be read); the build list comes from Microsoft's CNA data as shown on NVD.

## Fix

Install the November 2026 Windows cumulative update that brings your build to at least the fixed build for your version (e.g. Windows 11 24H2/25H2 10.0.26100/26200.9974, Windows 10 22H2 10.0.19045.7846, Server 2022 10.0.20348.5870, Server 2025 10.0.26100.33822).

## Timeline

- 2026-11-10T19:25:00+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119866
- 2026-11-10T22:44:46+00:00 analyst https://nvd.nist.gov/vuln/detail/cve-2026-119866 — MSRC page unreadable (JS-only); build/fix data from Microsoft CNA record on NVD, nothing verified. Not exploited per secondary sources; unknown whether service is on by default, and code execution vs data impact (CVSS C:H/I:H/A:H, local, PR:L, AC:H). Settle via MSRC page.

## Documents

- [describes] NVD CVE-2026-119866 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/cve-2026-119866

## From the sources

Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally.

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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_