CVE-2026-23761 VB-Audio Voicemeeter & Matrix Drivers DoS via Improper FILE_OBJECT FsContext Initialization
Local unprivileged users can crash Windows systems via a null dereference in VB-Audio virtual audio drivers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23761?
CVE-2026-23761 is a medium-severity vulnerability in VB-Audio Software Matrix, published on 22 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
VB-Audio Voicemeeter, Voicemeeter Banana, and Voicemeeter Potato (versions ending in 1.1.1.9, 2.1.1.9, and 3.1.1.9 and earlier, respectively), as well as VB-Audio Matrix and Matrix Coconut (versions ending in 1.0.2.2 and 2.0.2.2 and earlier, respectively), contain a vulnerability in their virtual audio drivers (vbvoicemeetervaio64*.sys, vbmatrixvaio64*.sys, vbaudio_vmauxvaio*.sys, vbaudio_vmvaio*.sys, and vbaudio_vmvaio3*.sys). When a handle is opened with a special file attribute value, the drivers improperly initialize FILE_OBJECT->FsContext to a non-pointer magic value. If subsequent operations are not handled by the VB-Audio driver and are forwarded down the audio driver stack (e.g., via PortCls to ks.sys), the invalid FsContext value can be dereferenced, causing a kernel crash (BSoD), typically SYSTEM_SERVICE_EXCEPTION with STATUS_ACCESS_VIOLATION. This flaw allows a local unprivileged user to trigger a denial-of-service on affected Windows systems.
Weakness: CWE-824
Which versions are affected by CVE-2026-23761?
How do I fix CVE-2026-23761?
No fix has been published for CVE-2026-23761 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23761 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23761 exists.
Sources
Also known as GHSA-6hwp-64jx-rmg2.