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CVE-2016-3949

Estado: ModificadaAlta (7.5)—

CPU de dispositivos Siemens SIMATIC S7-300 con Profinet habilitada con firmware en versiones anteriores a 3.3.12 y CPU de dispositivos SIMATIC S7-300 con Profinet inhabilitada con firmware en versiones anteriores a 3.3.12 permiten atacantes remotos provocar una denegación de servicio (transición a modo por defecto) a través de paquetes (1) ISO-TSAP o (2) Profibus manipulados.

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 (2)

Siemens — Simatic S7-300 With Profitnet Support FirmwareSiemens — Simatic S7-300 Without Profitnet Support Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2016-3949",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
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  "published": "2016-06-27T10:59:06.580",
  "references": [
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      "url": "http://www.securitytracker.com/id/1036089",
      "tags": [
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        "VDB Entry"
      ],
      "source": "cve@mitre.org"
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      "source": "cve@mitre.org"
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      "source": "cve@mitre.org"
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    {
      "url": "http://www.securitytracker.com/id/1036089",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets."
    },
    {
      "lang": "es",
      "value": "CPU de dispositivos Siemens SIMATIC S7-300 con Profinet habilitada con firmware en versiones anteriores a 3.3.12 y CPU de dispositivos SIMATIC S7-300 con Profinet inhabilitada con firmware en versiones anteriores a 3.3.12 permiten atacantes remotos provocar una denegación de servicio (transición a modo por defecto) a través de paquetes (1) ISO-TSAP o (2) Profibus manipulados."
    }
  ],
  "lastModified": "2026-06-17T00:46:37.240",
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}