{
  "id": "CVE-2020-1054",
  "url": "https://spydr.io/cve/CVE-2020-1054",
  "published": "2020-05-21T23:15:12.070Z",
  "modified": "2026-10-07T18:17:09.270Z",
  "score": 7,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "microsoft.com",
  "epss": 0.54158,
  "epss_percentile": 0.98985,
  "exploited": true,
  "kev": {
    "added": "2021-11-03",
    "due": "2022-05-03",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Microsoft Win32k Privilege Escalation Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2020-1054"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Microsoft"
  ],
  "products": [
    "Microsoft Windows 10 Version 1507",
    "Microsoft Windows 10 Version 1607",
    "Microsoft Windows 10 Version 1709",
    "Microsoft Windows 10 Version 1709 for 32-bit Systems",
    "Microsoft Windows 10 Version 1803",
    "Microsoft Windows 10 Version 1809",
    "Microsoft Windows 10 Version 1903 for 32-bit Systems",
    "Microsoft Windows 10 Version 1903 for ARM64-based Systems",
    "Microsoft Windows 10 Version 1903 for x64-based Systems",
    "Microsoft Windows 10 Version 1909",
    "Microsoft Windows 7",
    "Microsoft Windows 7 Service Pack 1",
    "Microsoft Windows 8.1",
    "Microsoft Windows Server 2008 R2 Service Pack 1",
    "Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)",
    "Microsoft Windows Server 2008 Service Pack 2",
    "Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)",
    "Microsoft Windows Server 2012",
    "Microsoft Windows Server 2012 (Server Core installation)",
    "Microsoft Windows Server 2012 R2"
  ],
  "cwes": [
    "CWE-787"
  ],
  "description": "An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.",
  "status": "Modified",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1054",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://packetstormsecurity.com/files/160515/Microsoft-Windows-DrawIconEx-Local-Privilege-Escalation.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1054",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1054",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1054",
  "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."
    }
  ]
}