---
id: CVE-2026-90508
title: >-
  A security flaw has been discovered in Chengdu Qilu Technology Ludashi
  6.1026.4715.714
summary: >-
  A security flaw has been discovered in Chengdu Qilu Technology Ludashi
  6.1026.4715.714. Affected by this vulnerability is the function
  MessageNotifyCallback in the library ProtectFilter64.sys of the component
  Message Dispatch Handler. Pe…
severity: low
cvss: 3.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-862
  - CWE-863
vendor: Chengdu Qilu Technology
product: Ludashi
affected:
  - Ludashi 6.1026.4715.714
published: '2026-09-13'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T15:17:27.790'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90508'
references:
  - url: 'https://gist.github.com/lzty/fc5f336dca4c287ab4c22168b6dc8ec2'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90508'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/895271'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403096'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403096/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00112
epssPercentile: 0.0155
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T13:42:29.278243Z'
ingestedAt: '2026-09-14T15:23:07.471Z'
---

## Overview

A security flaw has been discovered in Chengdu Qilu Technology Ludashi 6.1026.4715.714. Affected by this vulnerability is the function MessageNotifyCallback in the library ProtectFilter64.sys of the component Message Dispatch Handler. Performing a manipulation results in missing authorization. Attacking locally is a requirement. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

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