CVE-2026-90975

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{"affected": [{"affectedData": [{"product": "RtUsbA64.sys", "vendor": "Realtek", "versions": [{"status": "affected", "version": "6.3.9600.2393"}]}], "source": "cret@cert.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in Realtek's RtUsbA64.sys USB audio driver allows a local, low-privileged user to abuse a kernel I/O control (IOCTL) interface that acts on a caller-supplied user-mode pointer without proper validation or capture. By issuing crafted property requests an attacker can obtain kernel-mode read and write access, which can be leveraged for local privilege escalation and arbitrary kernel code execution."}], "id": "CVE-2026-90975", "lastModified": "2026-11-12T20:04:52.377", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-90975", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-10T18:22:27.974732Z", "version": "2.0.3"}}]}, "published": "2026-11-06T19:17:59.147", "references": [{"source": "cret@cert.org", "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-90975"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/701544"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-822"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.3.9600.2393"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "RtUsbA64.sys", "source": "cna", "vendor": "Realtek"}, "product": "rtusba64.sys", "vendor": "realtek"}], "created": "2026-11-06T19:45:08.424374+00:00", "title": "Local Privilege Escalation via Kernel I/O Control in Realtek RtUsbA64.sys", "updated": "2026-11-06T21:12:23.653148+00:00", "vendors": ["realtek", "realtek$PRODUCT$rtusba64.sys"], "weaknesses": ["CWE-20", "CWE-125"]}