---
id: CVE-2026-106781
title: >-
  An issue in WCH CH340/CH341 USB-to-Serial Windows Driver setup package
  CH341SER.EXE version 4.0 allows a local attacker to escalate privileges.
summary: >-
  An issue in WCH CH340/CH341 USB-to-Serial Windows Driver setup package
  CH341SER.EXE version 4.0 allows a local attacker to escalate privileges.
severity: none
exploitAvailable: true
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T14:35:58.586Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-106781'
references:
  - url: 'https://www.wch-ic.com/downloads/CH341SER_EXE.html'
  - url: 'https://github.com/tanuj8124/CVE-2026-106781'
tags:
  - cve.org
  - exploit-available
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/tanuj8124/CVE-2026-106781'
  checkedAt: '2026-10-26T15:30:04.740Z'
ingestedAt: '2026-10-26T15:29:30.514Z'
---

## Overview

An issue in WCH CH340/CH341 USB-to-Serial Windows Driver setup package CH341SER.EXE version 4.0 allows a local attacker to escalate privileges.

## Remediation

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