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CVE-2026-8479

Estado: AplazadaMedia (6.9)—

IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode (BCI) is configured.

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)

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

ABB — Rtu500AI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-8479",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8479",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-26T14:30:56.474198Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "cybersecurity@hitachienergy.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 6.9,
          "Automatable": "NOT_DEFINED",
          "attackVector": "ADJACENT",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "cybersecurity@hitachienergy.com",
      "affectedData": [
        {
          "vendor": "Hitachi Energy",
          "product": "RTU500 series CMU firmware",
          "versions": [
            {
              "status": "affected",
              "version": "12.7.1",
              "versionType": "custom",
              "lessThanOrEqual": "12.7.7"
            },
            {
              "status": "affected",
              "version": "13.5.1",
              "versionType": "custom",
              "lessThanOrEqual": "13.5.4"
            },
            {
              "status": "affected",
              "version": "13.6.1",
              "versionType": "custom",
              "lessThanOrEqual": "13.6.3"
            },
            {
              "status": "affected",
              "version": "13.7.1",
              "versionType": "custom",
              "lessThanOrEqual": "13.7.8"
            },
            {
              "status": "affected",
              "version": "13.8.1",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-26T14:16:41.247",
  "references": [
    {
      "url": "https://publisher.hitachienergy.com/preview?DocumentID=8DBD000252&LanguageCode=en&DocumentPartId=&Action=Launch",
      "source": "cybersecurity@hitachienergy.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cybersecurity@hitachienergy.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable\nfor a NULL pointer dereferencing, if a specially crafted\nsequence of messages is sent for a certain time, causing\nDenial of Service impact.\nProduct is only affected if IEC 60870-5-104 functionality in\nbidirectional mode (BCI) is configured."
    },
    {
      "lang": "es",
      "value": "IEC 60870-5-104 utilizado en modo bidireccional en RTU500 es vulnerable a una desreferenciación de puntero NULL, si se envía una secuencia de mensajes especialmente diseñada durante un cierto tiempo, causando un impacto de denegación de servicio. El producto solo se ve afectado si la funcionalidad IEC 60870-5-104 en modo bidireccional (BCI) está configurada."
    }
  ],
  "lastModified": "2026-07-23T11:10:00.120",
  "sourceIdentifier": "cybersecurity@hitachienergy.com"
}