---
id: "CVE-2026-119821"
page: "https://infrastack.ai/live/CVE-2026-119821"
kind: "vulnerability"
aliases: ["CVE-2026-119821"]
title: "Windows Network Connection Broker flaw lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "windows"]
not_affected_if: ["no-local-untrusted-users"]
published_at: "2026-11-10T19:19:56+00:00"
first_seen_at: "2026-11-10T19:24:57+00:00"
updated_at: "2026-11-10T19:40:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119821", "first_seen_at": "2026-11-10T19:24:57+00:00"}]
exploit_sources: []
---

# Windows Network Connection Broker flaw lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119821 (this .md is for agents)

Windows Network Connection Broker does not check authorization properly, so a user who already has an account on the machine can raise their privileges. The sources describe no remote trigger, so the impact is local privilege escalation to a higher-privileged account.

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

## How to check

- Check the installed Windows build with `winver` and compare it to the fixed build in Microsoft's advisory for CVE-2026-119821

## Timeline

- 2026-11-10T19:24:57+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119821

## From the sources

Improper authorization in Windows Network Connection Broker allows an authorized attacker to elevate privileges locally.

---

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