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CVE-2026-20781

Estado: ModificadaCrítica (9.3)—

WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data reported to the backend.

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.

Acceso de red sin autenticación a endpoints WebSocket (AV:N/PR:N/UI:N) permite suplantación de estaciones y manipulación de datos (T1078, T1565); escalada de privilegios sobre infraestructura (T1068).

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

Privileged Account ManagementNetwork SegmentationApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer Guidance

Tecnologías afectadas (1)

Cloudcharge — Cloudcharge.se

CWE

Referencias

JSON original (NVD)

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          "options": [
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              "exploitation": "none"
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              "automatable": "yes"
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              "technicalImpact": "total"
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  "published": "2026-02-27T00:16:55.807",
  "references": [
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      "url": "https://cloudcharge.tech/support/contact/",
      "tags": [
        "Product"
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      "source": "ics-cert@hq.dhs.gov"
    },
    {
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-03.json",
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    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T10:17:47.300",
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}