CVE-2026-94129: BioStar VALKYRIE AURORA IOCTL BS_RVSIO64.sys sub_1105C write-what-where
A vulnerability was detected in BioStar VALKYRIE AURORA 2.10.2411.0800. This vulnerability affects the function sub1105C of the file BSRVSIO64.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.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
The known affected deployment is BioStar VALKYRIE AURORA version 2.10.2411.0800, specifically its BS_RVSIO64.sys IOCTL handler. Exploitation must be performed locally, so remotely unauthenticated attackers are not the stated exposure scenario.
What level of access does an attacker need?
An attacker needs local access and low privileges. No user interaction is required according to the supplied severity vector.
How serious is successful exploitation?
Successful exploitation can produce a write-what-where condition through manipulation of the PhysicalAddress argument. The supplied vector rates confidentiality, integrity, and availability impact as high, with scope changed.
Is exploitation likely to be available?
A public exploit is reported to exist and may be used. The vendor was contacted before disclosure but did not provide a response.
How can I identify potentially affected systems?
Identify installations of BioStar VALKYRIE AURORA and check whether they are running version 2.10.2411.0800. The affected driver named in the report is BS_RVSIO64.sys.