CVE-2026-90508

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 4.9% of scored records. A rank, not a probability.

NVD base score

1.8 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-15.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-13 09:45Z1 MO AGO

Last updated

2026-09-15 14:00Z1 MO AGO

Reserved

2026-09-12

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.6)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-862Missing AuthorizationClass
• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

5830cd053120acca4ed47abe2b9ca8776a0d8bec52efe55333d3eb37578842a3

• vuldb.comVDB-403096 | Chengdu Qilu Technology Ludashi Message Dispatch ProtectFilter64.sys MessageNotifyCallback authorizationhttps://vuldb.com/vuln/403096vdb-entrytechnical-description
• vuldb.comVDB-403096 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/403096/ctisignaturepermissions-required
• vuldb.comCVE-2026-90508 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-90508third-party-advisory
• vuldb.comSubmit #895271 | Chengdu Qilu Technology Ludashi (鲁大师) 6.1026.4715.714 Missing Authenticationhttps://vuldb.com/submit/895271third-party-advisory
• gist.github.comhttps://gist.github.com/lzty/fc5f336dca4c287ab4c22168b6dc8ec2exploit