Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-90508
Chengdu Qilu Technology Ludashi Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorization
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
L L N H N N L L 1.8 .0016 4.3 —
AFFECTED
Product Versions Fixed
Ludashi 6.1026.4715.714 – —
TIMELINE
Sep 12 Reserved by VulDB
Sep 13 Published (CNA: VulDB)
Sep 15 EXPLOIT PUBLISHED — CVE-2026-90508 (Chengdu Qilu Technology Ludashi). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| September 12, 2026 | Reserved | Reserved by VulDB |
| September 13, 2026 | Published | Published (CNA: VulDB) |
| September 15, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-90508 (Chengdu Qilu Technology Ludashi). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Chengdu Qilu Technology | Ludashi | — | 6.1026.4715.714 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-90508 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.