---
id: "CVE-2026-119852"
page: "https://infrastack.ai/live/CVE-2026-119852"
kind: "vulnerability"
aliases: ["CVE-2026-119852"]
title: "Windows Installer: missing authorization lets a local user gain higher privileges"
severity: "medium"
cvss: 6.7
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "local-privilege-escalation", "windows", "windows-installer"]
not_affected_if: ["single-user-machine-with-no-untrusted-accounts"]
published_at: "2026-11-10T19:20:02+00:00"
first_seen_at: "2026-11-10T19:24:59+00:00"
updated_at: "2026-11-10T19:55:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119852", "first_seen_at": "2026-11-10T19:24:59+00:00"}]
exploit_sources: []
---

# Windows Installer: missing authorization lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119852 (this .md is for agents)

Windows Installer has a missing authorization check that lets a user who already has an account on the machine raise their privileges. An attacker who is logged in locally could reach administrator-level rights.

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

## How to check

- Check the Windows build with `winver` and compare it to the Microsoft security update that lists this CVE.
- Confirm Windows Update is installing monthly cumulative updates on managed machines.

## Timeline

- 2026-11-10T19:24:59+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119852

## From the sources

Missing authorization in Windows Installer allows an authorized attacker to elevate privileges locally.

---

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