CVE-2026-90508 Chengdu Qilu Technology Ludashi Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorization
Local attackers can exploit missing authorization in the Ludashi kernel driver to escalate privileges, posing a significant risk to system integrity.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90508?
CVE-2026-90508 is a medium-severity missing authorization vulnerability in Chengdu Qilu Technology Ludashi, published on 13 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Which versions are affected by CVE-2026-90508?
How do I fix CVE-2026-90508?
No fix has been published for CVE-2026-90508 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-90508 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90508 exists.
Sources
Also known as GHSA-4jv3-g8rw-vxw2.