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CVE-2020-24685

Estado: ModificadaAlta (8.6)—

An unauthenticated specially crafted packet sent by an attacker over the network will cause a denial-of-service (DoS) vulnerability. Vulnerability allows attacker to stop the PLC. After stopping (ERR LED flashing red), physical access to the PLC is required in order to restart the application. This issue affects: ABB AC500 V2 products with onboard Ethernet version 2.8.4 and prior versions.

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).

Tecnologías afectadas (1)

ABB — Ac500 CPU Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-24685",
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          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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  "published": "2021-02-09T04:15:14.393",
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      "value": "An unauthenticated specially crafted packet sent by an attacker over the network will cause a denial-of-service (DoS) vulnerability. Vulnerability allows attacker to stop the PLC. After stopping (ERR LED flashing red), physical access to the PLC is required in order to restart the application. This issue affects: ABB AC500 V2 products with onboard Ethernet version 2.8.4 and prior versions."
    },
    {
      "lang": "es",
      "value": "Un paquete no autenticado especialmente diseñado y enviado por un atacante a través de la red causará una vulnerabilidad de denegación de servicio (DoS). Una vulnerabilidad permite a un atacante detener el PLC. Después de detenerse (LED ERR parpadeando en rojo), es requerido acceso físico al PLC para reiniciar la aplicación. Este problema afecta a: Productos ABB AC500 V2 con Ethernet integrado versión 2.8.4 d y anteriores"
    }
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  "lastModified": "2026-06-17T03:05:59.080",
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