CVE-2021-42205

MEDIUM

ELAN Miniport <24.21.51.2 - Use After Free

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-42205. PoCs published by gmh5225.

AI-analyzed exploit summary This repository provides a writeup for CVE-2021-42205, a local denial-of-service (DoS) vulnerability in the ELAN Miniport touchpad Windows driver. The vulnerability allows local users to crash the system by sending a specific IOCTL request, which is mishandled due to double processing.

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

This repository provides a writeup for CVE-2021-42205, a local denial-of-service (DoS) vulnerability in the ELAN Miniport touchpad Windows driver. The vulnerability allows local users to crash the system by sending a specific IOCTL request, which is mishandled due to double processing.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: ELAN Miniport touchpad Windows driver before 24.21.51.2
No auth needed
Prerequisites: Local access to the system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 4.7
EPSS 0.0026
EPSS Percentile 16.8%
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