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CVE-2026-8676

Estado: Pendiente de análisisAlta (8.8)—

An attacker is able to downgrade the security of a Bluetooth LE connection by deleting an existing bond, spoofing the bonded device and creating a new bond.

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.

AV:A (red adyacente) sin PR→T1210. Spoofing de dispositivo bonificado y downgrade de seguridad permite asumir identidad de dispositivo de confianza (T1078), intermediación en conexión Bluetooth (T1557).

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

User TrainingPrivileged Account ManagementNetwork SegmentationDisable or Remove Feature or ProgramApplication Developer GuidanceActive Directory Configuration

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Bluetooth — Bluetooth LEAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-8676",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8676",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-26T20:47:10.839195Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "product-security@silabs.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@silabs.com",
      "affectedData": [
        {
          "vendor": "silabs.com",
          "product": "Simplicity SDK",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2024.12.0",
              "versionType": "semver"
            }
          ],
          "packageName": "Bluetooth LE SDK",
          "defaultStatus": "unaffected"
        }
      ]
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  ],
  "published": "2026-05-26T21:16:44.630",
  "references": [
    {
      "url": "https://community.silabs.com/068Vm00000p3N9C",
      "source": "product-security@silabs.com"
    },
    {
      "url": "https://www.silabs.com/documents/public/release-notes/bt-software-release-notes-9.0.0.0.pdf",
      "source": "product-security@silabs.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
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      "type": "Secondary",
      "source": "product-security@silabs.com",
      "description": [
        {
          "lang": "en",
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        }
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  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker is able to downgrade the security of a Bluetooth LE connection by deleting an existing bond, spoofing the bonded device and creating a new bond."
    },
    {
      "lang": "es",
      "value": "Un atacante puede degradar la seguridad de una conexión Bluetooth LE eliminando un enlace existente, suplantando el dispositivo enlazado y creando un nuevo enlace."
    }
  ],
  "lastModified": "2026-07-23T11:10:00.120",
  "sourceIdentifier": "product-security@silabs.com"
}