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TI-2026-19134 Aliases CVE-2026-23761GHSA-6hwp-64jx-rmg2

VB-Audio Voicemeeter & Matrix Drivers DoS via Improper FILE_OBJECT FsContext Initialization

Priority MEDIUM 64CWE-824Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-824 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00182 7th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
VB-Audio SoftwareVoicemeeter (Standard)up to 1.1.1.9—No fix listedCNA
VB-Audio SoftwareVoicemeeter Bananaup to 2.1.1.9—No fix listedCNA
VB-Audio SoftwareVoicemeeter Potatoup to 3.1.1.9—No fix listedCNA
VB-Audio SoftwareMatrixup to 1.0.2.2—No fix listedCNA
VB-Audio SoftwareMatrix Coconutup to 2.0.2.2—No fix listedCNA
  • Voicemeeter (Standard) VendorVB-Audio Software Affected up to 1.1.1.9 Fixed in — No fix listed CNA
  • Voicemeeter Banana VendorVB-Audio Software Affected up to 2.1.1.9 Fixed in — No fix listed CNA
  • Voicemeeter Potato VendorVB-Audio Software Affected up to 3.1.1.9 Fixed in — No fix listed CNA
  • Matrix VendorVB-Audio Software Affected up to 1.0.2.2 Fixed in — No fix listed CNA
  • Matrix Coconut VendorVB-Audio Software Affected up to 2.0.2.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23761
  2. 2026-10-03 Alias added: GHSA-6hwp-64jx-rmg2

References

Exploit 1

Patch 2

Other 1

  • TI-2026-19136 VB-Audio Matrix Drivers Local Privilege Escalation via Kernel Memory Exposure CVSS 4.0HIGH 8.5
  • TI-2026-19135 VB-Audio Voicemeeter & Matrix Drivers DoS via MmMapLockedPagesSpecifyCache CVSS 4.0MEDIUM 6.9
  • TI-2026-19137 VB-Audio Voicemeeter & Matrix Drivers DoS via Corrupted IoAllocateMdl Length CVSS 4.0MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences