CVE-2026-94129 BioStar CVE debrief

Who should care

Defenders responsible for BioStar VALKYRIE AURORA deployments should assess exposure and verify the presence of affected versions. Security teams and vulnerability management teams should prioritize verifying exposure and restricting access to the affected component. Operators and administrators of the affected system should also be aware of the vulnerability and take necessary precautions. Additionally, incident response teams should be prepared to handle

Why it matters

CVE-2026-94129 is a high-severity vulnerability in BioStar VALKYRIE AURORA 2.10.2411.0800, allowing local exploitation. Defenders should prioritize verifying exposure and restricting access to the affected component.

• Verify potential local exploitation attempts
• Assess exposure and verify affected versions
• Restrict access to IOCTL Handler component

Technical summary

The vulnerability affects the function sub_1105C of the file BS_RVSIO64.sys in BioStar VALKYRIE AURORA 2.10.2411.0800, allowing a local write-what-where condition. The vulnerability has a high CVSS score of 8.5, indicating a high severity level. Defenders should prioritize verifying the presence of affected versions and assessing exposure. The exploit is now public and may be used, increasing the urgency for defenders to act. The vulnerability is in the IOCTL Handler component, which may be a high-risk area for exploitation.

Defensive priority

Defenders should prioritize verifying the presence of affected versions and assessing exposure, as the vulnerability has a high CVSS score of 8.5.

Recommended defensive actions

• Verify the presence of affected BioStar VALKYRIE AURORA versions and assess exposure
• Review and restrict access to the IOCTL Handler component
• Monitor for potential local exploitation attempts
• Perform vulnerability scanning to identify potential targets
• Implement compensating controls for exposed systems
• Review system logs for suspicious activity
• Track exceptions and retest remediated assets

Evidence notes

The vulnerability was detected in BioStar VALKYRIE AURORA 2.10.2411.0800, affecting the function sub_1105C of the file BS_RVSIO64.sys. The exploit is now public and may be used. Defenders should verify the presence of affected versions and assess exposure. The vulnerability has a high CVSS score of 8.5. The source details are limited, and defenders should approach with caution.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.