FKIE_CVE-2026-8676

Vulnerability from fkie_nvd - Published: 2026-05-26 21:16 - Updated: 2026-07-23 11:10
Severity
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
product-security@silabs.comhttps://community.silabs.com/068Vm00000p3N9C
product-security@silabs.comhttps://www.silabs.com/documents/public/release-notes/bt-software-release-notes-9.0.0.0.pdf
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageName": "Bluetooth LE SDK",
          "product": "Simplicity SDK",
          "vendor": "silabs.com",
          "versions": [
            {
              "lessThan": "2024.12.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "product-security@silabs.com"
    }
  ],
  "cveTags": [],
  "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 conexi\u00f3n Bluetooth LE eliminando un enlace existente, suplantando el dispositivo enlazado y creando un nuevo enlace."
    }
  ],
  "id": "CVE-2026-8676",
  "lastModified": "2026-07-23T11:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "product-security@silabs.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8676",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-26T20:47:10.839195Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-26T21:16:44.630",
  "references": [
    {
      "source": "product-security@silabs.com",
      "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"
    }
  ],
  "sourceIdentifier": "product-security@silabs.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ],
      "source": "product-security@silabs.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.