{
  "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-2021-26316",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-26316",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2023-01-10T19:46:46.575Z",
    "updatedAt": "2025-04-09T15:19:17.090Z",
    "importedAt": "2026-10-24T01:56:26.894Z",
    "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": "Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.",
      "affected": [
        {
          "vendor": " AMD",
          "product": "Ryzen 5000 Series ",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "various ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": " AMD",
          "product": "Ryzen 2000 Series",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "various ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "Ryzen 3000 Series",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "various ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "1st Gen EPYC ",
          "packageName": "AGESA ",
          "platforms": [
            "x86"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "various ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "2nd Gen EPYC",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "Various ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "AMD",
          "product": "3rd Gen EPYC",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "various ",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}