CVE-2026-23763 VB-Audio Matrix Drivers Local Privilege Escalation via Kernel Memory Exposure
Local attackers can exploit a kernel memory exposure flaw in VB-Audio drivers to read/write kernel memory and escalate privileges to SYSTEM.
- 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-2026-23763?
CVE-2026-23763 is a high-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 Matrix and Matrix Coconut (versions ending in 1.0.2.2 and 2.0.2.2 and earlier, respectively), contain a local privilege escalation vulnerability in the VBMatrix VAIO virtual audio driver (vbmatrixvaio64*_win10.sys). The driver allocates a 128-byte non-paged pool buffer and, upon receiving IOCTL 0x222060, maps it into user space using an MDL and MmMapLockedPagesSpecifyCache. Because the allocation size is not page-aligned, the mapping exposes the entire 0x1000-byte kernel page containing the buffer plus adjacent non-paged pool allocations with read/write permissions. An unprivileged local attacker can open a device handle (using the required 0x800 attribute flag), invoke the IOCTL to obtain the mapping, and then read or modify live kernel objects and pointers present on that page. This enables bypass of KASLR, arbitrary kernel memory read/write within the exposed page, corruption of kernel objects, and escalation to SYSTEM.
Weakness: CWE-668
Which versions are affected by CVE-2026-23763?
How do I fix CVE-2026-23763?
No fix has been published for CVE-2026-23763 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23763 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23763 exists.
Sources
Also known as GHSA-3hvj-ch28-p4x7.