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CVE-2021-26409

Estado: ModificadaAlta (7.8)—

Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.

CVSS

Probabilidad de explotación (EPSS)

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 (1)

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-26409",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-04-09T14:52:04.643428Z"
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  "published": "2023-01-11T08:15:11.743",
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      "tags": [
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      "source": "psirt@amd.com"
    },
    {
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.  \n\n"
    },
    {
      "lang": "es",
      "value": " La comprobación de los límites insuficiente en SEV-ES puede permitir que un atacante corrompa la memoria de la tabla de mapa inverso (RMP), lo que podría provocar una pérdida de integridad de la memoria SNP (paginación anidada segura)."
    }
  ],
  "lastModified": "2026-06-17T03:43:21.097",
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}