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CVE-2021-47878

Estado: AplazadaAlta (8.5)—

eBeam Education Suite 2.5.0.9 contains an unquoted service path vulnerability in the eBeam Device Service that allows local users to potentially execute code with elevated privileges. Attackers can exploit the unquoted path in the service configuration to inject malicious code that would execute with LocalSystem privileges during service startup.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:L/PR:L sin UI:N indica acceso local con privilegios limitados. La vulnerabilidad de unquoted service path permite escalada a LocalSystem (CWE-428), técnica clásica de T1068. La ejecución de código malicioso en contexto elevado es el impacto directo (T1059).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Ebeam — Education SuiteAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-47878",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47878",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-22T16:47:01.589325Z"
        }
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    "cvssMetricV31": [
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          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
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          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
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  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "vendor": "Luidia",
          "product": "eBeam Education Suite",
          "versions": [
            {
              "status": "affected",
              "version": "2.5.0.9"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-21T18:16:21.450",
  "references": [
    {
      "url": "http://esvc000385.wic045u.server-web.com/Downloads/eBeam/",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.exploit-db.com/exploits/49647",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/ebeam-education-suite-ebeam-device-service-unquoted-service-path",
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-428"
        }
      ]
    }
  ],
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    {
      "lang": "en",
      "value": "eBeam Education Suite 2.5.0.9 contains an unquoted service path vulnerability in the eBeam Device Service that allows local users to potentially execute code with elevated privileges. Attackers can exploit the unquoted path in the service configuration to inject malicious code that would execute with LocalSystem privileges during service startup."
    },
    {
      "lang": "es",
      "value": "eBeam Education Suite 2.5.0.9 contiene una vulnerabilidad de ruta de servicio sin comillas en el Servicio de Dispositivos eBeam que permite a usuarios locales ejecutar código potencialmente con privilegios elevados. Los atacantes pueden explotar la ruta sin comillas en la configuración del servicio para inyectar código malicioso que se ejecutaría con privilegios de LocalSystem durante el inicio del servicio."
    }
  ],
  "lastModified": "2026-06-17T04:18:40.820",
  "sourceIdentifier": "disclosure@vulncheck.com"
}