CVE-2026-20465

{
  "id": "CVE-2026-20465",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-03T03:16:41.313",
  "lastModified": "2026-10-23T22:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In wlan AP driver, there is a possible out of bounds write due to a missing bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00489200; Issue ID: MSV-7834."
    },
    {
      "lang": "es",
      "value": "En el controlador de AP WLAN, existe una posible escritura fuera de límites debido a una comprobación de límites faltante. Esto podría llevar a una escalada de privilegios remota (proximal/adyacente) sin necesidad de privilegios de ejecución adicionales. La interacción del usuario no es necesaria para la explotación. ID del parche: WCNCR00489200; ID del problema: MSV-7834."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "MediaTek, Inc.",
          "product": "MediaTek chipset",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "MT6890",
              "status": "affected"
            },
            {
              "version": "MT7915",
              "status": "affected"
            },
            {
              "version": "MT7916",
              "status": "affected"
            },
            {
              "version": "MT7981",
              "status": "affected"
            },
            {
              "version": "MT7986",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-04T00:00:00+00:00",
          "id": "CVE-2026-20465",
          "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://www.mediatek.com/product-security-bulletin/August-2026",
      "source": "[email protected]"
    }
  ]
}