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CVE-2021-47891

Estado: AplazadaCrítica (9.3)—

Unified Remote 3.9.0.2463 contains a remote code execution vulnerability that allows attackers to send crafted network packets to execute arbitrary commands. Attackers can exploit the service by connecting to port 9512 and sending specially crafted packets to open a command prompt and download and execute malicious payloads.

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.

Vector CVSS de red sin autenticación (AV:N/PR:N/UI:N) indica T1190. La descripción explícita de ejecución de comandos arbitrarios y descarga de payloads sostiene T1059 como impacto principal; T1078 secundario por implicación de compromisos de cuenta/sesión mediante RCE.

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

Privileged Account ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (1)

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

Unifiedremote — Unified RemoteAI

CWE

Referencias

JSON original (NVD)

Mostrar
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          "id": "CVE-2021-47891",
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          "options": [
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              "technicalImpact": "total"
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "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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      "affectedData": [
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  "published": "2026-01-23T17:15:52.523",
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      "url": "https://www.exploit-db.com/exploits/49587",
      "source": "disclosure@vulncheck.com"
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      "url": "https://www.unifiedremote.com/",
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  "vulnStatus": "Deferred",
  "weaknesses": [
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          "value": "CWE-306"
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      "lang": "en",
      "value": "Unified Remote 3.9.0.2463 contains a remote code execution vulnerability that allows attackers to send crafted network packets to execute arbitrary commands. Attackers can exploit the service by connecting to port 9512 and sending specially crafted packets to open a command prompt and download and execute malicious payloads."
    },
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    }
  ],
  "lastModified": "2026-06-17T04:18:42.263",
  "sourceIdentifier": "disclosure@vulncheck.com"
}