CVE-2020-1243
Estado: ModificadaAlta (7.8)—
Se presenta una vulnerabilidad de denegación de servicio cuando Microsoft Hyper-V en un servidor host presenta un fallo al comprobar apropiadamente datos maliciosos específicos de un usuario en un sistema operativo invitado. Para explotar la vulnerabilidad, un atacante que ya presenta una cuenta privilegiada en un sistema operativo invitado, ejecutándose como una máquina virtual, podría correr una aplicación especialmente diseñada. La actualización de seguridad aborda la vulnerabilidad al resolver las condiciones en las que Hyper-V no podría manejar estas peticiones, también se conoce como "Windows Hyper-V Denial of Service Vulnerability"
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.90%
- Percentil entre todas las CVEs puntuadas: 59
- Fecha de la puntuación: 16/10/2026
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 (3)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
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"published": "2020-10-16T23:15:17.680",
"references": [
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"value": "<p>A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.</p>\n<p>To exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.</p>\n<p>The security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.</p>"
},
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"lang": "es",
"value": "Se presenta una vulnerabilidad de denegación de servicio cuando Microsoft Hyper-V en un servidor host presenta un fallo al comprobar apropiadamente datos maliciosos específicos de un usuario en un sistema operativo invitado. Para explotar la vulnerabilidad, un atacante que ya presenta una cuenta privilegiada en un sistema operativo invitado, ejecutándose como una máquina virtual, podría correr una aplicación especialmente diseñada. La actualización de seguridad aborda la vulnerabilidad al resolver las condiciones en las que Hyper-V no podría manejar estas peticiones, también se conoce como \"Windows Hyper-V Denial of Service Vulnerability\""
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],
"lastModified": "2026-06-17T03:00:53.447",
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