---
id: "CVE-2026-119403"
page: "https://infrastack.ai/live/CVE-2026-119403"
kind: "vulnerability"
aliases: ["CVE-2026-119403"]
title: "Windows Broadcast DVR service flaw lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 1809", "fixed": ["10.0.17763.9487"], "affected": ">= 10.0.17763.0, < 10.0.17763.9487", "ecosystem": "microsoft"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": ">= 10.0.19044.0, < 10.0.19044.7846", "ecosystem": "microsoft"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": ">= 10.0.19045.0, < 10.0.19045.7846", "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"}]
ecosystems: []
tags: ["infrastructure", "local", "privilege-escalation", "windows"]
not_affected_if: ["patched-build"]
published_at: "2026-11-10T19:19:55+00:00"
first_seen_at: "2026-11-10T19:24:57+00:00"
updated_at: "2026-11-10T22:52:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119403", "first_seen_at": "2026-11-10T19:24:57+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/cve-2026-119403", "first_seen_at": "2026-11-10T22:52:06+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/cve-2026-119403"]}]
exploit_sources: []
---

# Windows Broadcast DVR service flaw lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119403 (this .md is for agents)

A use-after-free bug in the Windows Broadcast DVR User Service lets an attacker who already has a local account raise their privileges. The sources give no more detail on the trigger or the affected Windows builds.

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

## Affected

- microsoft:Windows 10 1809 affected >= 10.0.17763.0, < 10.0.17763.9487 fixed 10.0.17763.9487
- microsoft:Windows 10 21H2 affected >= 10.0.19044.0, < 10.0.19044.7846 fixed 10.0.19044.7846
- microsoft:Windows 10 22H2 affected >= 10.0.19045.0, < 10.0.19045.7846 fixed 10.0.19045.7846
- 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

## How to check

Run winver or [System.Environment]::OSVersion / 'ver' and compare the build number (10.0.<build>.<revision>) with the fixed builds in the fix field. Lower than the fixed revision means exposed. Optionally check whether the service is present: Get-Service -Name 'BcastDVRUserService*'.

## Fix

Install the November 2026 Windows cumulative update that moves the build to at least: Win10 1809 10.0.17763.9487, 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. (KB numbers not read.)

## Timeline

- 2026-11-10T19:24:57+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119403
- 2026-11-10T22:52:06+00:00 analyst https://nvd.nist.gov/vuln/detail/cve-2026-119403 — Affected builds and fixed builds from Microsoft CNA data mirrored on NVD; MSRC page is JS-only and was unreadable, so nothing is marked verified. Default-enabled status of the service unknown. Sibling CVE-2026-88103 (Oct 2026) has same title, different builds.

## Documents

- [describes] NVD CVE-2026-119403 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/cve-2026-119403

## From the sources

Use after free in Windows Broadcast DVR User 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_