---
id: "CVE-2026-96043"
page: "https://infrastack.ai/live/CVE-2026-96043"
kind: "vulnerability"
aliases: ["CVE-2026-96043"]
title: "Windows Connection Manager: use-after-free lets a local user gain privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["connection-manager", "infrastructure", "local-privilege-escalation", "use-after-free", "windows"]
not_affected_if: ["no-untrusted-local-users"]
published_at: "2026-11-10T19:22:01+00:00"
first_seen_at: "2026-11-10T19:25:28+00:00"
updated_at: "2026-11-10T20:03:43+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96043", "first_seen_at": "2026-11-10T19:25:28+00:00"}, {"source": "analyst", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96043", "first_seen_at": "2026-11-10T20:03:43+00:00", "cites": ["https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96043"]}]
exploit_sources: []
---

# Windows Connection Manager: use-after-free lets a local user gain privileges

Link for people: https://infrastack.ai/live/CVE-2026-96043 (this .md is for agents)

A use-after-free bug in the Windows Connection Manager Service lets an attacker who already has a local, authorized account raise their privileges. The sources do not say whether the flaw is reachable remotely.

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

## How to check

Run winver (or PowerShell Get-HotFix) to get the Windows build and installed updates. Compare them with the CVE-2026-96043 entry in the Microsoft Security Update Guide (msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96043) and confirm the November 2026 cumulative update for that build is installed. Affected builds are not yet confirmed.

## Fix

Install the November 2026 Windows security updates (Patch Tuesday, 2026-11-10). The KB number for each Windows build is not yet read from Microsoft's update guide.

## Timeline

- 2026-11-10T19:25:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96043
- 2026-11-10T20:03:43+00:00 analyst https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96043 — MSRC CVRF index confirms the CVE is in the November 2026 Security Updates (released 2026-11-10). The update guide page and CVRF document returned no text, so affected builds, KB numbers and the fixed versions are unknown. Nothing verified. No exploitation or PoC found in sources.

## Documents

- [advisory] MSRC CVRF update index for CVE-2026-96043 (November 2026 Security Updates) https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96043

## From the sources

Use after free in Windows Connection Manager 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_