{
  "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-2020-15705",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2020-15705",
    "idYear": 2020,
    "status": "PUBLISHED",
    "publishedAt": "2020-07-29T17:45:33.422Z",
    "updatedAt": "2024-09-17T00:06:01.169Z",
    "importedAt": "2026-10-24T01:56:17.081Z",
    "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": "GRUB2: avoid loading unsigned kernels when GRUB is booted directly under secureboot without shim",
      "summary": "GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.",
      "affected": [
        {
          "vendor": "Ubuntu",
          "product": "grub2 in Ubuntu",
          "versions": [
            {
              "version": "20.04 LTS",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.04-1ubuntu26.1"
            },
            {
              "version": "18.04 LTS",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.02-2ubuntu8.16"
            },
            {
              "version": "16.04 LTS",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.02~beta2-36ubuntu3.26"
            },
            {
              "version": "14.04 ESM",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.02~beta2-9ubuntu1.20"
            }
          ]
        }
      ]
    }
  }
}