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CVE-2025-7029

Estado: AplazadaAlta (8.2)—

A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used to derive pointers (OcHeader, OcData) passed into power and thermal configuration logic. These buffers are not validated before performing multiple structured memory writes based on OcSetup NVRAM values, enabling arbitrary SMRAM corruption and potential SMM privilege escalation.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso local con privilegios altos (PR:H, AV:L) que escalona a SMM; corrupción de SMRAM y lectura de memoria de firmware justifican T1068 primario y T1005 secundario.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareData Loss Prevention

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-7029",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-7029",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-07-12T03:55:17.650535Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.2,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 1.5
      }
    ]
  },
  "affected": [
    {
      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "GIGABYTE",
          "product": "UEFI-OverClockSmiHandler",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-07-11T16:15:27.237",
  "references": [
    {
      "url": "https://kb.cert.org/vuls/id/746790",
      "source": "cret@cert.org"
    },
    {
      "url": "https://www.binarly.io/advisories/brly-dva-2025-011",
      "source": "cret@cert.org"
    },
    {
      "url": "https://www.gigabyte.com/Support/Security",
      "source": "cret@cert.org"
    },
    {
      "url": "https://www.kb.cert.org/vuls/id/746790",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "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 to derive pointers (OcHeader, OcData) passed into power and thermal configuration logic. These buffers are not validated before performing multiple structured memory writes based on OcSetup NVRAM values, enabling arbitrary SMRAM corruption and potential SMM privilege escalation."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el controlador Software SMI (SwSmiInputValue 0xB2) permite a un atacante local controlar el registro RBX, que se utiliza para derivar punteros (OcHeader, OcData) que se pasan a la lógica de configuración de energía y temperatura. Estos búferes no se validan antes de realizar múltiples escrituras en memoria estructurada basadas en los valores NVRAM de OcSetup, lo que permite la corrupción arbitraria de SMRAM y la posible escalada de privilegios de SMM."
    }
  ],
  "lastModified": "2026-06-17T10:04:07.727",
  "sourceIdentifier": "cret@cert.org"
}