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CVE-2020-7498

Estado: ModificadaCrítica (9.8)—

A CWE-798: Use of Hard-coded Credentials vulnerability exists in the Unity Loader and OS Loader Software (all versions). The fixed credentials are used to simplify file transfer. Today the use of fixed credentials is considered a vulnerability, which could cause unauthorized access to the file transfer service provided by the Modicon PLCs. This could result in various unintended results.

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)

Schneider-electric — OS LoaderSchneider-electric — Unity Loader

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-7498",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "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": "cybersecurity@se.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Unity Loader and OS Loader Software (All versions)",
          "versions": [
            {
              "status": "affected",
              "version": "Unity Loader and OS Loader Software (All versions)"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-06-16T20:15:14.690",
  "references": [
    {
      "url": "https://www.se.com/ww/en/download/document/SEVD-2020-161-02",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cybersecurity@se.com"
    },
    {
      "url": "https://www.se.com/ww/en/download/document/SEVD-2020-161-02",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cybersecurity@se.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A CWE-798: Use of Hard-coded Credentials vulnerability exists in the Unity Loader and OS Loader Software (all versions). The fixed credentials are used to simplify file transfer. Today the use of fixed credentials is considered a vulnerability, which could cause unauthorized access to the file transfer service provided by the Modicon PLCs. This could result in various unintended results."
    },
    {
      "lang": "es",
      "value": "Una CWE-798: Se presenta una vulnerabilidad de Uso de Credenciales Embebidas en Unity Loader and OS Loader Software (todas las versiones). Las credenciales fijas son usadas para simplificar la transferencia de archivo. Hoy en día, el uso de credenciales fijas es considerada una vulnerabilidad, lo que podría causar acceso no autorizado al servicio de transferencia de archivos proporcionado por los PLC Modicon. Esto podría conllevar a varios resultados no deseados"
    }
  ],
  "lastModified": "2026-06-17T03:24:53.870",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:schneider-electric:os_loader:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "383FE9FE-75C1-4BEF-B16D-3316662883E2"
            },
            {
              "criteria": "cpe:2.3:a:schneider-electric:unity_loader:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0182018C-6154-44CF-AB88-D3C9306AC939"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "cybersecurity@se.com"
}