{"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"}}]}}