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CVE-2026-83777

Status: Awaiting AnalysisHigh (8.8)—

Heap-based buffer overflow in Windows Bluetooth Service allows an unauthorized attacker to elevate privileges over an adjacent network.

CVSS

Exploitation probability (EPSS)

FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Desbordamiento de búfer en el heap del servicio Bluetooth de Windows; CVSS AV:A/PR:N/UI:N permite escalar privilegios desde red adyacente. El texto no describe ejecución de comandos, así que no se asigna T1059.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-83777",
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          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-10-13T20:28:52.263886Z"
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          "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",
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  "published": "2026-10-13T19:20:26.400",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83777",
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
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      "source": "secure@microsoft.com",
      "description": [
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          "value": "CWE-122"
        }
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    {
      "lang": "en",
      "value": "Heap-based buffer overflow in Windows Bluetooth Service allows an unauthorized attacker to elevate privileges over an adjacent network."
    }
  ],
  "lastModified": "2026-10-13T21:18:49.187",
  "sourceIdentifier": "secure@microsoft.com"
}