EUVD-2026-83823
GHSA-w5qv-px7f-545v
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
Local low-priv user issuing an IOCTL (AV:L/PR:L/UI:N/AC:L); kernel arbitrary write yields SYSTEM control on the same host, so C/I/A:H and S:U (no separate impacted system).
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
6DescriptionCVE.org
A security vulnerability has been detected in BioStar VIVID LED DJ 4.0.2411.1500. This affects the function sub_1105C of the file BS_LED64.sys of the component IOCTL Handler. The manipulation of the argument AssociatedIrp leads to write-what-where condition. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Articles & Coverage 1
AnalysisAI
A write-what-where flaw in the BS_LED64.sys kernel driver shipped with BioStar VIVID LED DJ 4.0.2411.1500 lets an authenticated local user on a Windows host escalate to SYSTEM-level privileges by sending a crafted IOCTL that causes the driver to write attacker-controlled data to an attacker-chosen kernel address. The defect sits in the driver's IOCTL handler (sub_1105C), where the AssociatedIrp value is used without adequate validation, and the CVSS 4.0 base score of 8.5 (assessed as CVSS:3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects total loss of confidentiality, integrity, and availability of the host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local access to a Windows host running BioStar VIVID LED DJ 4.0.2411.1500 with its BS_LED64.sys kernel driver installed and loaded, and the ability to open the driver's device object and issue IOCTLs (default-accessible to low-privileged users, PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but access-gated local privilege-escalation issue, not a remote-critical. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch was identified at time of analysis - BioStar did not respond to the disclosure, and no fixed version of VIVID LED DJ or BS_LED64.sys is documented in the available references. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows endpoints for BioStar VIVID LED DJ 4.0.2411.1500 and the BS_LED64.sys driver, and where the RGB control functionality is not business-required, uninstall the application and remove or disable the driver; where it is required, isolate those endpoints and restrict standard-user local code execution as much as operationally feasible. …
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External POC / Exploit Code
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