CVE-2026-23761Public exploit

Local system crash via invalid FsContext pointer

Published Jan 22, 2026 · Updated Jan 22, 2026

Access of an uninitialized pointer in VB-Audio virtual audio drivers allows local users to crash affected Windows systems. The IRP_MJ_CREATE handler stores the non-pointer value 123 in FILE_OBJECT->FsContext for a handle opened with attribute 0x800, then forwards an unsupported IOCTL to ks.sys, which dereferences it. A local unprivileged user can trigger a system-wide BSoD on Windows installations of Voicemeeter Standard 1.1.1.9 and earlier, Banana 2.1.1.9 and earlier, Potato 3.1.1.9 and earlier, Matrix 1.0.2.2 and earlier, or Matrix Coconut 2.0.2.2 and earlier.

CVSS severity6.9
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access of an uninitialized pointer in VB-Audio virtual audio drivers allows local users to crash affected Windows systems. The IRP_MJ_CREATE handler stores the non-pointer value 123 in FILE_OBJECT->FsContext for a handle opened with attribute 0x800, then forwards an unsupported IOCTL to ks.sys, which dereferences it. A local unprivileged user can trigger a system-wide BSoD on Windows installations of Voicemeeter Standard 1.1.1.9 and earlier, Banana 2.1.1.9 and earlier, Potato 3.1.1.9 and earlier, Matrix 1.0.2.2 and earlier, or Matrix Coconut 2.0.2.2 and earlier.

The record

CVE
CVE-2026-23761
Published
Jan 22, 2026
Updated
Jan 22, 2026
Vendor
VB-Audio Software
Product
Matrix Coconut
Classifications
CWE-824, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.0.2.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

VB-Audio Software · Matrix Coconutversion=0 <=2.0.2.2
VB-Audio Software · Voicemeeter Bananaversion=0 <=2.1.1.9
VB-Audio Software · Voicemeeter Standardversion=0 <=1.1.1.9
VB-Audio Software · Voicemeeter Potatoversion=0 <=3.1.1.9
VB-Audio Software · Matrixversion=0 <=1.0.2.2

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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