CVE-2021-46747
Estado: Pendiente de análisisAlta (7.1)—
Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN (System Management Network) apertures leading to a potential escalation of privileges.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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: 7.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.10%
- Percentil entre todas las CVEs puntuadas: 1
- Fecha de la puntuación: 4/10/2026
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
T1068Exploitation for Privilege Escalationprivilege escalation90 % - Impacto principal
T1548.004Elevated Execution with Promptprivilege escalation85 %
Acceso local (AV:L) con privilegios altos (PR:H) sin interacción; vulnerabilidad de control de acceso en procesador permite escalada de privilegios mapeando apertures SMN sensibles.
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
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-1220
Referencias
JSON original (NVD)
Mostrar
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"role": "CISA Coordinator",
"options": [
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{
"technicalImpact": "total"
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"version": "2.0.3",
"timestamp": "2026-06-02T03:56:08.958235Z"
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}
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],
"published": "2026-06-01T21:16:23.103",
"references": [
{
"url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html",
"source": "psirt@amd.com"
},
{
"url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html",
"source": "psirt@amd.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@amd.com",
"description": [
{
"lang": "en",
"value": "CWE-1220"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN (System Management Network) apertures leading to a potential escalation of privileges."
},
{
"lang": "es",
"value": "Granularidad insuficiente de control de acceso en ASP (AMD Secure Processor) puede permitir a un atacante con una aplicación de espacio de usuario no confiable mapear aperturas SMN (System Management Network) sensibles, lo que lleva a una posible escalada de privilegios."
}
],
"lastModified": "2026-07-22T08:10:00.117",
"sourceIdentifier": "psirt@amd.com"
}