CVE-2023-31364
Estado: AplazadaAlta (8.3)—
Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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
- Puntuación base: 8.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.23%
- Percentil entre todas las CVEs puntuadas: 13
- Fecha de la puntuación: 5/10/2026
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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1499.004Application or System Exploitationimpact80 %
Vector CVSS con AV:N y PR:L indica acceso remoto con privilegios (máquina virtual maliciosa). CWE-119 implica escritura de memoria directa. El texto explícitamente describe 'flood de escrituras' causando error de máquina (DoS de host).
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
CWE
- CWE-119
Referencias
JSON original (NVD)
Mostrar
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"timestamp": "2026-02-27T19:05:49.436981Z"
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"published": "2026-02-26T21:28:47.037",
"references": [
{
"url": "https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7059.html",
"source": "psirt@amd.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@amd.com",
"description": [
{
"lang": "en",
"value": "CWE-119"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service."
},
{
"lang": "es",
"value": "El manejo inadecuado de las escrituras directas en memoria en la unidad de gestión de memoria de entrada/salida podría permitir que una máquina virtual (VM) invitada maliciosa inunde un anfitrión con escrituras, causando potencialmente un error fatal de comprobación de máquina que resultaría en denegación de servicio."
}
],
"lastModified": "2026-06-17T05:56:51.363",
"sourceIdentifier": "psirt@amd.com"
}