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CVE-2020-15261

Estado: ModificadaMedia (6.7)—Exploit
Gravedad6.7Media · CVSS 3.1
Probabilidad de explotación11 %mayor que el 96 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

En Windows, Veyon Service versiones anteriores a 4.4.2, contiene una vulnerabilidad de ruta de servicio sin comillas, permitiendo a usuarios autenticados localmente con privilegios administrativos correr ejecutables maliciosos con privilegios de LocalSystem. Dado que los usuarios de Veyon (tanto estudiantes como profesores) generalmente no poseen privilegios administrativos, esta vulnerabilidad solo es peligrosa en configuraciones no seguras. El problema ha sido corregido en la versión 4.4.2. Como solución alternativa, la explotación de la vulnerabilidad puede ser evitada al revocar privilegios administrativos de todos los usuarios potencialmente no confiables

CVSS

Puntuación base
6.7
Versión
3.1
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
11 %
Percentil entre todas las CVEs puntuadas
96
Fecha de la puntuación
27/10/2026

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.

Tecnologías afectadas (1)

Veyon — Veyon

CWE

Referencias

Mostrar las 12 referencias

JSON original (NVD)

Mostrar
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      "value": "On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don't have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users."
    },
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      "lang": "es",
      "value": "En Windows, Veyon Service versiones anteriores a 4.4.2, contiene una vulnerabilidad de ruta de servicio sin comillas, permitiendo a usuarios autenticados localmente con privilegios administrativos correr ejecutables maliciosos con privilegios de LocalSystem.&#xa0;Dado que los usuarios de Veyon (tanto estudiantes como profesores) generalmente no poseen privilegios administrativos, esta vulnerabilidad solo es peligrosa en configuraciones no seguras.&#xa0;El problema ha sido corregido en la versión 4.4.2.&#xa0;Como solución alternativa, la explotación de la vulnerabilidad puede ser evitada al revocar privilegios administrativos de todos los usuarios potencialmente no confiables"
    }
  ],
  "lastModified": "2026-06-17T02:56:23.017",
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