Vulnerability · Published Sep 13, 2026 · Assigned by VulDB
CVE-2026-90508Chengdu Qilu Technology Ludashi Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorization
Low 3.4
In plain English
A low-severity missing authorization in Ludashi from Chengdu Qilu Technology. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Chengdu Qilu Technology | Ludashi | 6.1026.4715.714 |
Weakness: CWE-862, CWE-863 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-403096 | Chengdu Qilu Technology Ludashi Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorization vdb-entry, technical-description
- VDB-403096 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-90508 | CVE Analysis and Report third-party-advisory
- Submit #895271 | Chengdu Qilu Technology Ludashi (鲁大师) 6.1026.4715.714 Missing Authentication third-party-advisory
- https://gist.github.com/lzty/fc5f336dca4c287ab4c22168b6dc8ec2 exploit