{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-20591",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-20591",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2024-08-13T16:53:23.681Z",
    "updatedAt": "2025-03-13T16:41:15.645Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": null,
      "summary": "Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform configuration to persist, allowing an attacker\nto read or modify hypervisor memory, potentially resulting in loss of\nconfidentiality, integrity, and availability.",
      "affected": [
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ 7003  Series Processors",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "MilanPI 1.0.0.B",
              "status": "unaffected",
              "versionType": "PI"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ 9004 Series Processors",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "Genoa 1.0.0.8",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ Embedded 7003 Series Processors",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "EmbMilanPI-SP3 1.0.0.7",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "AMD EPYC™ Embedded 9003 Series Processors",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "EmbGenoaPI-SP5  1.0.0.3",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  }
}