---
id: "CVE-2026-96056"
page: "https://infrastack.ai/live/CVE-2026-96056"
kind: "vulnerability"
aliases: ["CVE-2026-96056"]
title: "Windows USB driver heap overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "usb", "windows"]
not_affected_if: ["no-local-untrusted-users"]
published_at: "2026-11-10T19:22:03+00:00"
first_seen_at: "2026-11-10T19:25:28+00:00"
updated_at: "2026-11-10T19:58:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96056", "first_seen_at": "2026-11-10T19:25:28+00:00"}, {"source": "analyst", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96056", "first_seen_at": "2026-11-10T19:58:21+00:00", "cites": ["https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96056"]}]
exploit_sources: []
---

# Windows USB driver heap overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-96056 (this .md is for agents)

A heap-based buffer overflow in the Windows USB driver lets a user who already has some access on the machine corrupt kernel memory. An attacker can use it to elevate privileges on that Windows system.

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

## How to check

Run winver (or [System.Environment]::OSVersion) to get the build, then compare it with the November 2026 cumulative update for your Windows version in the MSRC Security Update Guide entry for CVE-2026-96056. The exact build numbers are not yet confirmed. Confirm the November 2026 cumulative update is installed (Get-HotFix).

## Fix

Install the November 2026 (2026-11-10) Windows cumulative security update for your Windows version. Exact KB and build numbers: unknown, to be read from the MSRC entry.

## Timeline

- 2026-11-10T19:25:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96056
- 2026-11-10T19:58:21+00:00 analyst https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96056 — MSRC API confirms CVE-2026-96056 is in the November 2026 (2026-11-10) Patch Tuesday release. The affected builds and KB were not readable: the update guide page is JS-only and the CVRF document returned no match. Nothing verified. Sibling USB driver CVEs (e.g. CVE-2026-61926) share the pattern, but their builds do not transfer. Settle it by opening the MSRC update guide entry in a browser.

## Documents

- [advisory] MSRC CVRF update index for CVE-2026-96056 (November 2026 Security Updates) https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-96056

## From the sources

Heap-based buffer overflow in Windows USB Driver 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_