---
id: "CVE-2026-88242"
page: "https://infrastack.ai/live/CVE-2026-88242"
kind: "vulnerability"
aliases: ["CVE-2026-88242"]
title: "Windows WinSock driver 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", "winsock"]
not_affected_if: ["no-local-accounts"]
published_at: "2026-11-10T19:21:33+00:00"
first_seen_at: "2026-11-10T19:25:20+00:00"
updated_at: "2026-11-10T19:50:01+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88242", "first_seen_at": "2026-11-10T19:25:20+00:00"}]
exploit_sources: []
---

# Windows WinSock driver use-after-free lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-88242 (this .md is for agents)

A use-after-free bug in the Windows Ancillary Function Driver for WinSock (afd.sys) lets an attacker who already has a local account corrupt memory. A successful attack raises their privileges on the machine.

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

## Timeline

- 2026-11-10T19:25:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-88242

## From the sources

Use after free in Windows Ancillary Function Driver for WinSock 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_