{
  "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-2021-43226",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-43226",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2021-12-15T14:15:12.000Z",
    "updatedAt": "2026-08-22T03:55:15.007Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "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": "Windows Common Log File System Driver Elevation of Privilege Vulnerability",
      "summary": "Windows Common Log File System Driver Elevation of Privilege Vulnerability",
      "affected": [
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 1809",
          "platforms": [
            "32-bit Systems",
            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.17763.2366"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2019",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.17763.2366"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2019 (Server Core installation)",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.17763.2366"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 1909",
          "platforms": [
            "32-bit Systems",
            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.18363.1977"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 21H1",
          "platforms": [
            "x64-based Systems",
            "ARM64-based Systems",
            "32-bit Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.19043.1415"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2022",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.20348.405"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 2004",
          "platforms": [
            "32-bit Systems",
            "ARM64-based Systems",
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.19041.1415"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server version 2004",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.19041.1415"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 20H2",
          "platforms": [
            "32-bit Systems",
            "ARM64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.19042.1415"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server version 20H2",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.19042.1415"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 11 version 21H2",
          "platforms": [
            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.22000.376"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 21H2",
          "platforms": [
            "32-bit Systems",
            "ARM64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.19044.1415"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 1507",
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.10240.19145"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 1607",
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.14393.4825"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2016",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.14393.4825"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2016 (Server Core installation)",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.14393.4825"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 7",
          "platforms": [
            "32-bit Systems"
          ],
          "versions": [
            {
              "version": "6.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.1.7601.25796"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 7 Service Pack 1",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.1.7601.25796"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 8.1",
          "platforms": [
            "32-bit Systems",
            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "versions": [
            {
              "version": "6.3.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.3.9600.20207"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2008 Service Pack 2",
          "platforms": [
            "32-bit Systems"
          ],
          "versions": [
            {
              "version": "6.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.0.6003.21309"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2008 Service Pack 2 (Server Core installation)",
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.0.6003.21309"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2008  Service Pack 2",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.0.6003.21309"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2008 R2 Service Pack 1",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.1.7601.25796"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2008 R2 Service Pack 1 (Server Core installation)",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.1.7601.25796"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2012",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.2.9200.23545"
            },
            {
              "version": "6.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.2.9200.23540"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2012 (Server Core installation)",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.2.9200.23545"
            },
            {
              "version": "6.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.2.9200.23540"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2012 R2",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.3.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.3.9600.20207"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2012 R2 (Server Core installation)",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "6.3.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.3.9600.20207"
            }
          ]
        }
      ]
    }
  }
}