---
id: "CVE-2026-122170"
page: "https://infrastack.ai/live/CVE-2026-122170"
kind: "vulnerability"
aliases: ["CVE-2026-122170"]
title: "Windows Win32K: use-after-free lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:20:34+00:00"
first_seen_at: "2026-11-10T19:25:10+00:00"
updated_at: "2026-11-10T21:41:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-122170", "first_seen_at": "2026-11-10T19:25:10+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T21:41:50+00:00"}]
exploit_sources: []
---

# Windows Win32K: use-after-free lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-122170 (this .md is for agents)

A use-after-free bug in the Windows Win32K kernel driver lets an attacker who already has a local account raise their privileges. The sources give no further detail on the exploit path.

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

## Timeline

- 2026-11-10T19:25:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-122170
- 2026-11-10T21:41:50+00:00 analyst — Could not read the MSRC entry: the Update Guide page is JS-only, web-cli returned nothing for MSRC and NVD, the MSRC CVRF feed is over the size limit, and browser-cli is out of credits (402). Nothing verified; affected builds and KB still unknown. Settle by opening the MSRC entry for CVE-2026-122170 and reading its Security Updates table. Not tried: X/web search. Description and CVSS 7.0 (AV:L/AC:H/PR:L) are from NVD, with Microsoft as the scoring source.

## From the sources

Use after free in Windows Win32K 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_