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CVE-2026-20417

Estado: AnalizadaMedia (5.3)—

In pcie, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10314946 / ALPS10340155; Issue ID: MSV-5154.

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).

Tecnologías afectadas (1)

CWE

Referencias

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  "id": "CVE-2026-20417",
  "cveTags": [],
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    "ssvcV203": [
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        "ssvcData": {
          "id": "CVE-2026-20417",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-03T04:55:35.332540Z"
        }
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          "baseScore": 5.3,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@mediatek.com",
      "affectedData": [
        {
          "vendor": "MediaTek, Inc.",
          "product": "MediaTek chipset",
          "versions": [
            {
              "status": "affected",
              "version": "MT6991"
            },
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  "published": "2026-02-02T09:15:56.723",
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      "url": "https://corp.mediatek.com/product-security-bulletin/February-2026",
      "tags": [
        "Vendor Advisory"
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      "source": "security@mediatek.com"
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      "type": "Secondary",
      "source": "security@mediatek.com",
      "description": [
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          "value": "CWE-787"
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    },
    {
      "lang": "es",
      "value": "En PCIe, existe una posible escritura fuera de límites debido a una falta de verificación de límites. Esto podría llevar a una escalada local de privilegios si un actor malicioso ya ha obtenido el privilegio de Sistema. No se requiere interacción del usuario para la explotación. ID de parche: ALPS10314946 / ALPS10340155; ID de problema: MSV-5154."
    }
  ],
  "lastModified": "2026-06-17T10:17:23.750",
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