CVE-2019-8263

Estado: ModificadaMedia (6.5)—

UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Puntuación base: 6.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.48%
Percentil entre todas las CVEs puntuadas: 84
Fecha de la puntuación: 6/10/2026

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).

Tecnologías afectadas (4)

Siemens — Sinumerik Access Mymachine/p2p Siemens — Sinumerik PCU Base Win10 Software/ipc Siemens — Sinumerik PCU Base Win7 Software/ipc Uvnc — Ultravnc

CWE

CWE-121
CWE-787

Referencias

JSON original (NVD)

Mostrar

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      "value": "UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206."
    },
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      "lang": "es",
      "value": "UltraVNC, en su revisión 1205, tiene un desbordamiento de búfer basado en pila en el código del cliente VNC dentro de la rutina ShowConnInfo, lo cual conduce a una condición de denegación de servicio (DoS). Este ataque parece ser explotable mediante la conectividad de red. Se requiere interacción del usuario para desencadenar esta vulnerabilidad. Esta vulnerabilidad se ha solucionado en la revisión 1206."
    }
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  "lastModified": "2026-06-17T02:41:46.387",
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