---
id: "CVE-2026-119894"
page: "https://infrastack.ai/live/CVE-2026-119894"
kind: "vulnerability"
aliases: ["CVE-2026-119894"]
title: "Windows Audio 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 Audio Service", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": ">= 10.0.22631.0, < 10.0.22631.7711", "ecosystem": "vendor"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": ">= 10.0.26100.0, < 10.0.26100.9974", "ecosystem": "vendor"}, {"name": "Windows 11 25H2", "fixed": ["10.0.26200.9974"], "affected": ">= 10.0.26200.0, < 10.0.26200.9974", "ecosystem": "vendor"}, {"name": "Windows 11 26H1", "fixed": ["10.0.28000.3501"], "affected": ">= 10.0.28000.0, < 10.0.28000.3501", "ecosystem": "vendor"}, {"name": "Windows 11 26H2", "fixed": ["10.0.26300.9974"], "affected": ">= 10.0.26300.0, < 10.0.26300.9974", "ecosystem": "vendor"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": ">= 10.0.26100.0, < 10.0.26100.33822", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["infrastructure", "local-privilege-escalation", "windows", "windows-11", "windows-server"]
not_affected_if: ["single-user-no-untrusted-accounts"]
published_at: "2026-11-10T19:20:09+00:00"
first_seen_at: "2026-11-10T19:25:01+00:00"
updated_at: "2026-11-10T22:27:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119894", "first_seen_at": "2026-11-10T19:25:01+00:00"}, {"source": "analyst", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119894", "first_seen_at": "2026-11-10T22:27:29+00:00", "cites": ["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119894", "https://app.opencve.io/cve/CVE-2026-119894"]}]
exploit_sources: []
---

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

Link for people: https://infrastack.ai/live/CVE-2026-119894 (this .md is for agents)

A use-after-free bug in the Windows Audio Service lets an attacker who already has a local account raise their privileges. The sources give no further detail on exploitation.

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

## Affected

- vendor:Windows Audio Service affected range not listed fixed no fixed version listed
- vendor:Windows 11 23H2 affected >= 10.0.22631.0, < 10.0.22631.7711 fixed 10.0.22631.7711
- vendor:Windows 11 24H2 affected >= 10.0.26100.0, < 10.0.26100.9974 fixed 10.0.26100.9974
- vendor:Windows 11 25H2 affected >= 10.0.26200.0, < 10.0.26200.9974 fixed 10.0.26200.9974
- vendor:Windows 11 26H1 affected >= 10.0.28000.0, < 10.0.28000.3501 fixed 10.0.28000.3501
- vendor:Windows 11 26H2 affected >= 10.0.26300.0, < 10.0.26300.9974 fixed 10.0.26300.9974
- vendor:Windows Server 2025 affected >= 10.0.26100.0, < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

Run winver or [System.Environment]::OSVersion.Version / 'cmd /c ver' on each machine. Exposed if the build is below the fixed build for its version (23H2 < 22631.7711, 24H2 < 26100.9974, 25H2 < 26200.9974, 26H1 < 28000.3501, 26H2 < 26300.9974, Server 2025 < 26100.33822).

## Fix

Install the November 2026 Windows update: Windows 11 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, Windows Server 2025 10.0.26100.33822 (builds per Microsoft CNA data via OpenCVE; confirm in MSRC).

## Timeline

- 2026-11-10T19:25:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119894
- 2026-11-10T22:27:29+00:00 analyst https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119894 — MSRC page is JS-only (unreadable), so nothing marked verified. Builds taken from Microsoft CNA record as mirrored by OpenCVE; fixed builds are the November 2026 cumulative updates. No exploitation or PoC seen.

## Documents

- [advisory] MSRC Security Update Guide: CVE-2026-119894 (JS-only, content not readable) https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119894
- [describes] OpenCVE: CVE-2026-119894 (mirrors Microsoft CNA record) https://app.opencve.io/cve/CVE-2026-119894

## From the sources

Use after free in Windows Audio Service 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_