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CVE-2023-49621

Estado: AnalizadaCrítica (9.8)—

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

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)

Siemens — Simatic CN 4100 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2023-49621",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-49621",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-01-23T05:01:44.085293Z"
        }
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    ],
    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "productcert@siemens.com",
      "affectedData": [
        {
          "vendor": "Siemens",
          "product": "SIMATIC CN 4100",
          "versions": [
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              "status": "affected",
              "version": "All versions < V2.7"
            }
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  "published": "2024-01-09T10:15:20.503",
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    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "productcert@siemens.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1392"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The \"intermediate installation\" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en SIMATIC CN 4100 (todas las versiones &lt; V2.7). El estado del sistema de \"intermediate installation\" de la aplicación afectada utiliza la credencial predeterminada con privilegios de administrador. Un atacante podría utilizar las credenciales para obtener el control total del dispositivo afectado."
    }
  ],
  "lastModified": "2026-06-17T06:36:15.150",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "2.7"
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  "sourceIdentifier": "productcert@siemens.com"
}