VDB-403096 · Submit #895271 · CVE-2026-90508

Chengdu Qilu Technology Ludashi 6.1026.4715.714 Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.1	$0-$5k	1.56

Summaryinfo

A vulnerability categorized as problematic has been discovered in Chengdu Qilu Technology Ludashi 6.1026.4715.714. Affected by this issue is the function MessageNotifyCallback in the library ProtectFilter64.sys of the component Message Dispatch Handler. Executing a manipulation can lead to authorization. This vulnerability is handled as CVE-2026-90508. It is possible to launch the attack on the local host. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in Chengdu Qilu Technology Ludashi 6.1026.4715.714 and classified as problematic. This vulnerability affects the function MessageNotifyCallback in the library ProtectFilter64.sys of the component Message Dispatch Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect integrity, and availability.

The advisory is shared for download at gist.github.com. This vulnerability was named CVE-2026-90508. The exploitation appears to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Chengdu Qilu Technology

Name

Ludashi

Version

6.1026.4715.714

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.4
VulDB Meta Temp Score: 3.1

VulDB Base Score: 3.4
VulDB Temp Score: 3.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/12/2026 Advisory disclosed
09/12/2026 +0 days VulDB entry created
09/12/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-90508 (🔒)
GCVE (CVE): GCVE-0-2026-90508
GCVE (VulDB): GCVE-100-403096
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/12/2026 10:57
Changes: 09/12/2026 10:57 (57)
Complete: 🔍
Submitter: Bigcat
Cache ID: 216::103

Submitinfo

Accepted

Submit #895271: Chengdu Qilu Technology Ludashi (鲁大师) 6.1026.4715.714 Missing Authentication (by Bigcat)