CVE-2026-94129
Received Received - Intake

Write-What-Where Condition in BioStar VALKYRIE AURORA

Vulnerability report for CVE-2026-94129, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-21

Last updated on: 2026-09-21

Assigner: VulDB

Description

A vulnerability was detected in BioStar VALKYRIE AURORA 2.10.2411.0800. This vulnerability affects the function sub_1105C of the file BS_RVSIO64.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress results in write-what-where condition. The attack needs to be approached locally. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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Meta Information

Published
2026-09-21
Last Modified
2026-09-21
Generated
2026-09-21
AI Q&A
2026-09-21
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
biostar valkyrie 2.10.2411.0800

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-123 Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.

Attack-Flow Graph

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Executive Summary

This is a local privilege escalation vulnerability in BioStar VALKYRIE AURORA 2.10.2411.0800. It exists in the IOCTL Handler component, specifically in the function sub_1105C of the file BS_RVSIO64.sys. The flaw allows an attacker to manipulate the PhysicalAddress argument, leading to a write-what-where condition. This means an attacker could potentially write arbitrary data to any memory location, enabling full system compromise.

Detection Guidance

This vulnerability requires local access and affects the BS_RVSIO64.sys driver. Detection may involve checking for unusual driver behavior or file modifications. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability could allow an attacker with local access to gain elevated privileges on the system. This could lead to unauthorized code execution, data theft, system manipulation, or complete takeover of the affected device. Since the exploit is public, the risk of real-world attacks increases.

Compliance Impact

The vulnerability allows local attackers to execute arbitrary code with high privileges due to a write-what-where condition in the IOCTL handler. This could lead to unauthorized access, data manipulation, or exfiltration, which may violate GDPR (data protection) and HIPAA (health data confidentiality) if exploited in systems handling sensitive information.

Mitigation Strategies

Immediately restrict local access to systems running BioStar VALKYRIE AURORA 2.10.2411.0800. Update or patch the affected driver if available. Monitor for suspicious activity related to the BS_RVSIO64.sys component.

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