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CVE-2021-42261

Estado: ModificadaAlta (7.5)—💥 PoC

Revisor Video Management System (VMS) before 2.0.0 has a directory traversal vulnerability. Successful exploitation could allow an attacker to traverse the file system to access files or directories that are outside of restricted directory on the remote server. This could lead to the disclosure of sensitive data on the vulnerable server.

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Revisorlab — Video Management System

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-42261",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  ],
  "published": "2021-10-19T12:15:07.697",
  "references": [
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      "tags": [
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    },
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      "url": "https://revisorlab.com/",
      "tags": [
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      ],
      "source": "cve@mitre.org"
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    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Revisor Video Management System (VMS) before 2.0.0 has a directory traversal vulnerability. Successful exploitation could allow an attacker to traverse the file system to access files or directories that are outside of restricted directory on the remote server. This could lead to the disclosure of sensitive data on the vulnerable server."
    },
    {
      "lang": "es",
      "value": "Revisor Video Management System (VMS) versiones anteriores a 2.0.0, presenta una vulnerabilidad de salto de directorio. Una explotación con éxito podría permitir a un atacante saltar el sistema de archivos para acceder a archivos o directorios que están fuera del directorio restringido en el servidor remoto. Esto podría conllevar a una revelación de datos confidenciales en el servidor vulnerable"
    }
  ],
  "lastModified": "2026-06-17T04:09:31.893",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "2.0.0"
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          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "cve@mitre.org"
}