{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-23761", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-01-15T18:42:20.938Z", "datePublished": "2026-01-22T16:17:49.527Z", "dateUpdated": "2026-05-14T02:09:25.959Z" }, "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "modules": [ "vbvoicemeetervaio64*_win10.sys", "vbaudio_vmauxvaio*.sys", "vbaudio_vmvaio*.sys", "vbaudio_vmvaio3*.sys" ], "platforms": [ "Windows" ], "product": "Voicemeeter (Standard)", "vendor": "VB-Audio Software", "versions": [ { "lessThanOrEqual": "1.1.1.9", "status": "affected", "version": "0", "versionType": "custom" } ] }, { "defaultStatus": "unaffected", "modules": [ "vbvoicemeetervaio64*_win10.sys", "vbaudio_vmauxvaio*.sys", "vbaudio_vmvaio*.sys", "vbaudio_vmvaio3*.sys" ], "platforms": [ "Windows" ], "product": "Voicemeeter Banana", "vendor": "VB-Audio Software", "versions": [ { "lessThanOrEqual": "2.1.1.9", "status": "affected", "version": "0", "versionType": "custom" } ] }, { "defaultStatus": "unaffected", "modules": [ "vbvoicemeetervaio64*_win10.sys", "vbaudio_vmauxvaio*.sys", "vbaudio_vmvaio*.sys", "vbaudio_vmvaio3*.sys" ], "platforms": [ "Windows" ], "product": "Voicemeeter Potato", "vendor": "VB-Audio Software", "versions": [ { "lessThanOrEqual": "3.1.1.9", "status": "affected", "version": "0", "versionType": "custom" } ] }, { "defaultStatus": "unaffected", "modules": [ "vbmatrixvaio64*_win10.sys" ], "platforms": [ "Windows" ], "product": "Matrix", "vendor": "VB-Audio Software", "versions": [ { "lessThanOrEqual": "1.0.2.2", "status": "affected", "version": "0", "versionType": "custom" } ] }, { "defaultStatus": "unaffected", "modules": [ "vbmatrixvaio64*_win10.sys" ], "platforms": [ "Windows" ], "product": "Matrix Coconut", "vendor": "VB-Audio Software", "versions": [ { "lessThanOrEqual": "2.0.2.2", "status": "affected", "version": "0", "versionType": "custom" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:twistedmatrix:twistedweb:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.0.2.2" } ] } ] } ], "credits": [ { "lang": "en", "type": "finder", "value": "Klaus Hahnenkamp" } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "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." } ], "value": "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." } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "baseScore": 6.9, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-824", "description": "CWE-824 Access of Uninitialized Pointer", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-05-14T02:09:25.959Z" }, "references": [ { "tags": [ "technical-description", "exploit" ], "url": "https://github.com/emkaix/security-research/tree/main/CVE-2026-23761" }, { "tags": [ "release-notes", "patch" ], "url": "https://forum.vb-audio.com/viewtopic.php?p=7574#p7574" }, { "tags": [ "release-notes", "patch" ], "url": "https://forum.vb-audio.com/viewtopic.php?p=7527#p7527" }, { "tags": [ "product" ], "url": "https://vb-audio.com/" }, { "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/vb-audio-voicemeeter-and-matrix-drivers-dos-via-improper-file-object-fscontext-initialization" } ], "source": { "discovery": "UNKNOWN" }, "title": "VB-Audio Voicemeeter & Matrix Drivers DoS via Improper FILE_OBJECT FsContext Initialization", "x_generator": { "engine": "Vulnogram 0.5.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-01-22T16:41:19.114138Z", "id": "CVE-2026-23761", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-22T16:41:39.558Z" } } ] } }