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CVE-2021-45420

Estado: ModificadaCrítica (9.8)—

Emerson Dixell XWEB-500 products are affected by arbitrary file write vulnerability in /cgi-bin/logo_extra_upload.cgi, /cgi-bin/cal_save.cgi, and /cgi-bin/lo_utils.cgi. An attacker will be able to write any file on the target system without any kind of authentication mechanism, and this can lead to denial of service and potentially remote code execution. Note: the product has not been supported since 2018 and should be removed or replaced.

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)

Emerson — Dixell Xweb-500 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-45420",
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      "sourceIdentifier": "cve@mitre.org"
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  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "userInteractionRequired": false
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          "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"
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  "affected": [
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  "published": "2022-02-14T14:15:08.083",
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  "vulnStatus": "Modified",
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      "description": [
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          "lang": "en",
          "value": "CWE-200"
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        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ]
    }
  ],
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      "lang": "en",
      "value": "Emerson Dixell XWEB-500 products are affected by arbitrary file write vulnerability in /cgi-bin/logo_extra_upload.cgi, /cgi-bin/cal_save.cgi, and /cgi-bin/lo_utils.cgi. An attacker will be able to write any file on the target system without any kind of authentication mechanism, and this can lead to denial of service and potentially remote code execution. Note: the product has not been supported since 2018 and should be removed or replaced."
    },
    {
      "lang": "es",
      "value": "** NO SOPORTADO CUANDO SE ASIGNÓ ** Los productos Emerson Dixell XWEB-500 están afectados por una vulnerabilidad de escritura de archivos arbitrarios en los archivos /cgi-bin/logo_extra_upload.cgi, /cgi-bin/cal_save.cgi y /cgi-bin/lo_utils.cgi. Un atacante podrá escribir cualquier archivo en el sistema de destino sin ningún tipo de mecanismo de autenticación, y esto puede conllevar a una denegación de servicio y potencialmente una ejecución de código remota. Nota: el producto no presenta soporte desde 2018 y debe ser eliminado o reemplazado"
    }
  ],
  "lastModified": "2026-07-09T01:17:10.880",
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