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CVE-2024-21977

Estado: AplazadaBaja (3.2)—

Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.

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 (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

AMD — SEV SNPAIIntel — RdrandAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2024-21977",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-21977",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-09-05T13:34:55.383175Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@amd.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 3.2,
          "attackVector": "LOCAL",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.5
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@amd.com",
      "affectedData": [
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ 7003 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "MilanPI 1.0.0.D"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ 9004 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "GenoaPI 1.0.0.C"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ 8004 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "GenoaPI 1.0.0.C"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "ChagallWSPI-sWRX8 1.0.0.8"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics",
          "versions": [
            {
              "status": "unaffected",
              "version": "CezannePI-FP6_1.0.1.1"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics",
          "versions": [
            {
              "status": "unaffected",
              "version": "RembrandtPI-FP7/FP7r2_1.0.0.B"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 5000 Series Desktop Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "ComboAM4v2 1.2.0.Cb"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 7000 Series Desktop Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "ComboAM5 1.2.0.1"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics",
          "versions": [
            {
              "status": "unaffected",
              "version": "PhoenixPI-FP8-FP7_1.1.0.3"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics",
          "versions": [
            {
              "status": "unaffected",
              "version": "RembrandtPI-FP7/FP7r2_1.0.0.B"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics",
          "versions": [
            {
              "status": "unaffected",
              "version": "DragonRangeFL1 1.0.0.3e"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "ChagallWSPI-sWRX8 1.0.0.8"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics",
          "versions": [
            {
              "status": "unaffected",
              "version": "CezannePI-FP6_1.0.1.1"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ 8000 Series Desktop Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "ComboAM5 1.2.0.1"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ Embedded 7003 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "EmbMilanPI-SP3 1.0.0.9"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ Embedded 9004 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "EmbGenoaPI-SP5 1.0.0.9"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ Embedded 8000 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "EmbeddedPhoenixPI-FP7r2_1.2.0.0"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ Embedded 7000 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "EmbeddedAM5PI 1.0.0.3"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ Embedded 5000 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "EmbAM4PI 1.0.0.7"
            }
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "AMD",
          "product": "AMD Ryzen™ Embedded V3000 Series Processors",
          "versions": [
            {
              "status": "unaffected",
              "version": "Embedded-PI_FP7r2 100A"
            }
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-09-05T13:15:31.310",
  "references": [
    {
      "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3014.html",
      "source": "psirt@amd.com"
    },
    {
      "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html",
      "source": "psirt@amd.com"
    },
    {
      "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html",
      "source": "psirt@amd.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@amd.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-459"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests."
    }
  ],
  "lastModified": "2026-06-17T07:10:28.680",
  "sourceIdentifier": "psirt@amd.com"
}