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CVE-2022-27640

Estado: ModificadaMedia (6.5)—

Se ha identificado una vulnerabilidad en SIMATIC CP 442-1 RNA (Todas las versiones anteriores a V1.5.18), SIMATIC CP 443-1 RNA (Todas las versiones anteriores a V1.5.18). Los dispositivos afectados manejan inapropiadamente el exceso de peticiones de difusión ARP. Esto podría permitir a un atacante crear una condición de denegación de servicio llevando a cabo ataques de difusión ARP, que pueden causar el reinicio del dispositivo

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 CP 442-1 RNA FirmwareSiemens — Simatic CP 443-1 RNA Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-27640",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.1,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/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": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.5,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:A/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": 2.8
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  },
  "affected": [
    {
      "source": "productcert@siemens.com",
      "affectedData": [
        {
          "vendor": "Siemens",
          "product": "SIMATIC CP 442-1 RNA",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V1.5.18"
            }
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        },
        {
          "vendor": "Siemens",
          "product": "SIMATIC CP 443-1 RNA",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V1.5.18"
            }
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        }
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  "published": "2022-05-20T13:15:15.077",
  "references": [
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-480937.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-480937.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "productcert@siemens.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
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    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions < V1.5.18), SIMATIC CP 443-1 RNA (All versions < V1.5.18). The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en SIMATIC CP 442-1 RNA (Todas las versiones anteriores a V1.5.18), SIMATIC CP 443-1 RNA (Todas las versiones anteriores a V1.5.18). Los dispositivos afectados manejan inapropiadamente el exceso de peticiones de difusión ARP. Esto podría permitir a un atacante crear una condición de denegación de servicio llevando a cabo ataques de difusión ARP, que pueden causar el reinicio del dispositivo"
    }
  ],
  "lastModified": "2026-06-17T04:37:24.100",
  "configurations": [
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