---
id: CVE-2026-70195
title: >-
  Use after free in Windows Ancillary Function Driver for WinSock allows an
  authorized attacker to disclose information locally.
summary: >-
  Use after free in Windows Ancillary Function Driver for WinSock allows an
  authorized attacker to disclose information locally.
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-362
  - CWE-416
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T21:18:05.893'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70195'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70195'
    label: secure@microsoft.com
tags:
  - nvd
ingestedAt: '2026-10-13T19:43:29.023Z'
---

## Overview

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.