CVE-2026-20462

{
  "id": "CVE-2026-20462",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-01T04:17:15.253",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Telephony, there is a possible memory corruption due to a heap buffer overflow. 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: ALPS11006447; Issue ID: MSV-7871."
    },
    {
      "lang": "es",
      "value": "En Telefonía, existe una posible corrupción de memoria debido a un desbordamiento de búfer en el heap. Esto podría conducir a una escalada local de privilegios si un actor malicioso ya ha obtenido el privilegio de Sistema. No se necesita interacción del usuario para la explotación. ID de parche: ALPS11006447; ID de problema: MSV-7871."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "MediaTek, Inc.",
          "product": "MediaTek chipset",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "MT6739",
              "status": "affected"
            },
            {
              "version": "MT6761",
              "status": "affected"
            },
            {
              "version": "MT6765",
              "status": "affected"
            },
            {
              "version": "MT6768",
              "status": "affected"
            },
            {
              "version": "MT6781",
              "status": "affected"
            },
            {
              "version": "MT6789",
              "status": "affected"
            },
            {
              "version": "MT6833",
              "status": "affected"
            },
            {
              "version": "MT6853",
              "status": "affected"
            },
            {
              "version": "MT6855",
              "status": "affected"
            },
            {
              "version": "MT6877",
              "status": "affected"
            },
            {
              "version": "MT6883",
              "status": "affected"
            },
            {
              "version": "MT6885",
              "status": "affected"
            },
            {
              "version": "MT6889",
              "status": "affected"
            },
            {
              "version": "MT6893",
              "status": "affected"
            },
            {
              "version": "MT8695",
              "status": "affected"
            },
            {
              "version": "MT8696",
              "status": "affected"
            },
            {
              "version": "MT8765",
              "status": "affected"
            },
            {
              "version": "MT8766",
              "status": "affected"
            },
            {
              "version": "MT8766R",
              "status": "affected"
            },
            {
              "version": "MT8768",
              "status": "affected"
            },
            {
              "version": "MT8781",
              "status": "affected"
            },
            {
              "version": "MT8791",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-01T00:00:00+00:00",
          "id": "CVE-2026-20462",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://corp.mediatek.com/product-security-bulletin/July-2026",
      "source": "[email protected]"
    }
  ]
}