{
  "id": "CVE-2020-1027",
  "url": "https://spydr.io/cve/CVE-2020-1027",
  "published": "2020-04-15T15:15:21.010Z",
  "modified": "2026-06-17T03:00:15.313Z",
  "score": 7.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.04547,
  "epss_percentile": 0.91328,
  "exploited": true,
  "kev": {
    "added": "2022-05-23",
    "due": "2022-06-13",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Microsoft Windows Kernel Privilege Escalation Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2020-1027"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Microsoft"
  ],
  "products": [
    "Microsoft Windows",
    "Microsoft Windows Server",
    "Microsoft Windows 10 Version 1909 for 32-bit Systems",
    "Microsoft Windows 10 Version 1909 for x64-based Systems",
    "Microsoft Windows 10 Version 1909 for ARM64-based Systems",
    "Microsoft Windows Server, version 1909 (Server Core installation)",
    "Microsoft Windows 10 Version 1903 for 32-bit Systems",
    "Microsoft Windows 10 Version 1903 for x64-based Systems",
    "Microsoft Windows 10 Version 1903 for ARM64-based Systems",
    "Microsoft Windows Server, version 1903 (Server Core installation)"
  ],
  "cwes": [
    "CWE-787"
  ],
  "description": "An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory, aka 'Windows Kernel Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0913, CVE-2020-1000, CVE-2020-1003.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1027",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1027",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1027",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}