CVE-2026-94129 BioStar VALKYRIE AURORA IOCTL BS_RVSIO64.sys sub_1105C write-what-where
A local attacker can exploit a write-what-where vulnerability in the BS_RVSIO64.sys driver to achieve privilege escalation or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-94129?
CVE-2026-94129 is a critical memory corruption vulnerability in BioStar VALKYRIE AURORA, published on 21 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-94129?
How do I fix CVE-2026-94129?
No fix has been published for CVE-2026-94129 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-94129 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-94129 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9qw7-9w2r-xc4v.