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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used as an unchecked pointer in the CommandRcx0 function. If the contents at RBX match certain expected values (e.g., '$DB$' or '2DB$'), the function performs arbitrary writes to System Management RAM (SMRAM), leading to potential privilege escalation to System Management Mode (SMM) and persistent firmware compromise."}, {"lang": "es", "value": "Una vulnerabilidad en el controlador Software SMI (SwSmiInputValue 0xB2) permite a un atacante local controlar el registro RBX, que se utiliza como puntero sin control en la funci\u00f3n CommandRcx0. Si el contenido de RBX coincide con ciertos valores esperados (p. ej., '$DB$' o '2DB$'), la funci\u00f3n realiza escrituras arbitrarias en la RAM de administraci\u00f3n del sistema (SMRAM), lo que puede provocar una escalada de privilegios al modo de administraci\u00f3n del sistema (SMM) y una vulnerabilidad persistente del firmware."}], "id": "CVE-2025-7026", "lastModified": "2025-11-03T20:19:20.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.5, "impactScore": 6.0, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-07-11T16:15:26.897", "references": [{"source": "cret@cert.org", "url": "https://kb.cert.org/vuls/id/746790"}, {"source": "cret@cert.org", "url": "https://www.binarly.io/advisories/brly-dva-2025-008"}, {"source": "cret@cert.org", "url": "https://www.gigabyte.com/Support/Security"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/746790"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Awaiting Analysis"}

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