TI-2026-61526 Aliases CVE-2026-90508 GHSA-4jv3-g8rw-vxw2

Chengdu Qilu Technology Ludashi Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorization

MEDIUM 54CWE-862Published 2026-09-13 · Updated 2026-09-15

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

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. 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00158 5th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Chengdu Qilu Technology	Ludashi	6.1026.4715.714	—	No fix listed	CNA

Ludashi VendorChengdu Qilu Technology Affected 6.1026.4715.714 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:chengdu_qilu_technology:ludashi::::::::	—	—	Chengdu Qilu Technology

cpe:2.3:a:chengdu_qilu_technology:ludashi:*:*:*:*:*:*:*:* Versions — — ·Chengdu Qilu Technology

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-90508
2026-10-03 Alias added: GHSA-4jv3-g8rw-vxw2

References

Exploit 1

https://gist.github.com/lzty/fc5f336dca4c287ab4c22168b6dc8ec2

TI-2026-61521 Chengdu Qilu Technology Ludashi ComputerZ_x64.sys sub_11008 information disclosure CVSS 4.0MEDIUM 4.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences