CVE-2021-42205

MEDIUM

ELAN Miniport <24.21.51.2 - Use After Free

Title source: llm

Description

ELAN Miniport touchpad Windows driver before 24.21.51.2, as used in PC hardware from multiple manufacturers, allows local users to cause a system crash by sending a certain IOCTL request, because that request is handled twice.

Exploits (1)

nomisec WRITEUP

by gmh5225 · poc

https://github.com/gmh5225/CVE-2021-42205

View Code ZIP pw:eip

References (1)

[Third Party Advisory] https://www.emc.com.tw/upload/F2E/Vulnerability%20Report/Vulnerability%20Report_Miniport%20touchpad%20Windows%20driver_20221107.pdf

Scores

CVSS v3 4.7

EPSS 0.0012

EPSS Percentile 30.2%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-703

Status published

Products (1)

lenovo/elan_miniport_touchpad_driver < 24.21.51.2

Published Nov 07, 2022

Tracked Since Feb 18, 2026