CVE-2026-20493

{
  "id": "CVE-2026-20493",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-03T03:16:44.443",
  "lastModified": "2026-10-23T22:10:00.160",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In wifi, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: BORA00154903; Issue ID: MSV-7575."
    },
    {
      "lang": "es",
      "value": "En Wi-Fi, existe una posible escritura fuera de límites debido a una comprobación de límites faltante. Esto podría conducir a una denegación de servicio local si un actor malicioso ya ha obtenido el privilegio de Sistema. No se necesita interacción del usuario para la explotación. ID del parche: BORA00154903; ID del problema: MSV-7575."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "MediaTek, Inc.",
          "product": "MediaTek chipset",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "MT6890",
              "status": "affected"
            },
            {
              "version": "MT6988",
              "status": "affected"
            },
            {
              "version": "MT6990",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 0.8,
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      }
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          "timestamp": "2026-08-03T19:46:44.793985Z",
          "id": "CVE-2026-20493",
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            {
              "exploitation": "none"
            },
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              "automatable": "no"
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            {
              "technicalImpact": "partial"
            }
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          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
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          "lang": "en",
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  "references": [
    {
      "url": "https://www.mediatek.com/product-security-bulletin/August-2026",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}