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CVE-2026-84854

Estado: AplazadaAlta (7)—

In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.

CVSS

Probabilidad de explotación (EPSS)

FIRST aún no ha puntuado esta CVE (habitual en CVEs muy recientes o rechazadas).

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:L + PR:L sin UI:R → T1068. Buffer overflow (CWE-787) en driver permite escritura fuera de límites; impactos: ejecución de código en kernel (T1059) y negación de servicio (crash, T1499.004).

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network Traffic

Tecnologías afectadas (1)

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

Wibu — WibukeyAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-84854",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-84854",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-06T11:10:33.824135Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "2fc02b1f-71e7-4514-a878-169626f68903",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      }
    ]
  },
  "affected": [
    {
      "source": "2fc02b1f-71e7-4514-a878-169626f68903",
      "affectedData": [
        {
          "vendor": "wibu-systems-ag",
          "product": "wibukey",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "6.72",
              "versionType": "custom"
            }
          ],
          "collectionURL": "https://www.wibu.com/products/wibukey.html",
          "defaultStatus": "unaffected"
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  ],
  "published": "2026-10-06T10:16:54.230",
  "references": [
    {
      "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100065.pdf",
      "source": "2fc02b1f-71e7-4514-a878-169626f68903"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
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      "source": "2fc02b1f-71e7-4514-a878-169626f68903",
      "description": [
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    {
      "lang": "en",
      "value": "In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified."
    }
  ],
  "lastModified": "2026-10-06T16:08:43.180",
  "sourceIdentifier": "2fc02b1f-71e7-4514-a878-169626f68903"
}