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CVE-2021-20841

Estado: ModificadaMedia (6.5)—

Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors.

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)

Ec-cube — Ec-cube

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-20841",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "EC-CUBE CO.,LTD.",
          "product": "EC-CUBE 2 series",
          "versions": [
            {
              "status": "affected",
              "version": "2.11.2 to 2.17.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-11-24T16:15:13.107",
  "references": [
    {
      "url": "https://jvn.jp/en/jp/JVN75444925/index.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://www.ec-cube.net/info/weakness/20211111/",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN75444925/index.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.ec-cube.net/info/weakness/20211111/",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "Un control de acceso inapropiado en la pantalla de administración de EC-CUBE 2 series versiones 2.11.2 a 2.17.1 permite a un atacante remoto autenticado omitir la restricción de acceso y alterar la configuración del sistema por medio de vectores no especificados"
    }
  ],
  "lastModified": "2026-06-17T03:34:31.533",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ec-cube:ec-cube:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "46C6E563-677C-459E-A963-507EB880BE13",
              "versionEndIncluding": "2.17.1",
              "versionStartIncluding": "2.11.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp"
}