---
id: "CVE-2026-96155"
page: "https://infrastack.ai/live/CVE-2026-96155"
kind: "vulnerability"
aliases: ["CVE-2026-96155"]
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 24H2", "fixed": ["10.0.26100.9974"], "affected": ">= 10.0.26100.0, < 10.0.26100.9974", "ecosystem": "vendor"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": ">= 10.0.26100.0, < 10.0.26100.33822", "ecosystem": "vendor"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": ">= 10.0.20348.0, < 10.0.20348.5870", "ecosystem": "vendor"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": ">= 10.0.19045.0, < 10.0.19045.7846", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["infrastructure", "local", "privilege-escalation", "windows", "windows-server"]
not_affected_if: ["no-local-untrusted-users", "no-local-users", "patched-build"]
published_at: "2026-11-10T19:22:12+00:00"
first_seen_at: "2026-11-10T19:25:32+00:00"
updated_at: "2026-11-10T19:51:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96155", "first_seen_at": "2026-11-10T19:25:32+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96155", "first_seen_at": "2026-11-10T19:51:47+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/CVE-2026-96155"]}]
exploit_sources: []
---

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

Link for people: https://infrastack.ai/live/CVE-2026-96155 (this .md is for agents)

Use-after-free in the Windows Audio Service lets a local user with a low-privilege account gain higher privileges (CVSS 7.0, local, high complexity, per Microsoft). Microsoft lists fixed builds for Windows 10, Windows 11 and Windows Server 2016-2025.

_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 24H2 affected >= 10.0.26100.0, < 10.0.26100.9974 fixed 10.0.26100.9974
- vendor:Windows Server 2025 affected >= 10.0.26100.0, < 10.0.26100.33822 fixed 10.0.26100.33822
- vendor:Windows Server 2022 affected >= 10.0.20348.0, < 10.0.20348.5870 fixed 10.0.20348.5870
- vendor:Windows 10 22H2 affected >= 10.0.19045.0, < 10.0.19045.7846 fixed 10.0.19045.7846

## How to check

Run winver or (Get-ComputerInfo).OsBuildNumber and compare the full build with the fixed one (e.g. Windows 11 24H2 needs 10.0.26100.9974 or later; Server 2022 needs 10.0.20348.5870 or later). Anything below is affected.

## Fix

Install the November 2026 cumulative update that brings the OS to the fixed build: 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

- 2026-11-10T19:25:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96155
- 2026-11-10T19:51:47+00:00 analyst https://nvd.nist.gov/vuln/detail/CVE-2026-96155 — MSRC page is JS-only and returned nothing; builds taken from Microsoft CNA data mirrored on NVD. Nothing verified. Exploitation/PoC not searched.

## Documents

- [describes] NVD CVE-2026-96155 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/CVE-2026-96155

## From the sources

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

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