---
id: CVE-2026-84408
title: >-
  QND contains an improper access control vulnerability in a named pipe, which
  may allow a local attacker who is logged in to a Windows PC where the affected
  product's client is installed to execute arbitrary commands with SYSTEM
  privileges.
summary: >-
  QND contains an improper access control vulnerability in a named pipe, which
  may allow a local attacker who is logged in to a Windows PC where the affected
  product's client is installed to execute arbitrary commands with SYSTEM
  privileges.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-782
vendor: QualitySoft Corporation
product: QND Premium
affected:
  - qnd_premium <= Ver.11.1i
  - qnd_standard <= Ver.11.1i
  - qnd_advance <= Ver.11.0.9i
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:27:25.623'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84408'
references:
  - url: 'https://jvn.jp/en/jp/JVN95825631/'
    label: vultures@jpcert.or.jp
  - url: 'https://www.qualitysoft.com/product/qnd_vulnerabilities_2026/'
    label: vultures@jpcert.or.jp
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T14:56:03.385814Z'
ingestedAt: '2026-09-16T07:51:48.495Z'
epss: 0.00626
epssPercentile: 0.47803
---

## Overview

QND contains an improper access control vulnerability in a named pipe, which may allow a local attacker who is logged in to a Windows PC where the affected product's client is installed to execute arbitrary commands with SYSTEM privileges.

## Remediation

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