CVE-2026-122113

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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 physically present attacker using a maliciously crafted USB device to trigger unbounded recursion in the driver's topology-parsing logic during device enumeration. Processing the crafted descriptor exhausts the kernel stack and causes a system crash (bugcheck), resulting in a denial of service. No authenticated user session is required."}], "id": "CVE-2026-122113", "lastModified": "2026-11-12T20:04:52.377", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-122113", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-10T18:21:02.904599Z", "version": "2.0.3"}}]}, "published": "2026-11-06T19:17:43.590", "references": [{"source": "cret@cert.org", "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-122113"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "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": "2026-11-06T19:30:10.579382+00:00", "title": "Unbounded Recursion in Realtek USB Audio Driver Causes System Crash", "updated": "2026-11-06T21:12:20.155754+00:00", "vendors": ["realtek", "realtek$PRODUCT$rtusba64.sys"], "weaknesses": ["CWE-673", "CWE-119"]}