{
  "cveId": "CVE-2020-16877",
  "url": "https://patchblox.com/security/cve/CVE-2020-16877",
  "summary": "CVE-2020-16877 is fixed in 12 products on 1 platform, first by KB4577671, released October 13, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Windows Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EAn elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.\u003C/p\u003E\n\u003Cp\u003ETo 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 overwrite or delete files.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how Windows handles reparse points.\u003C/p\u003E",
  "published": "2020-10-13T07:00:00Z",
  "severity": "Important",
  "cvss": 7.1,
  "epss": 0.00958,
  "epssPercentile": 0.61676,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-16877",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for 32-bit Systems",
      "fixedVersion": "19041.572",
      "fix": "KB4579311",
      "url": "https://patchblox.com/security/fix/microsoft/kb4579311",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for ARM64-based Systems",
      "fixedVersion": "19041.572",
      "fix": "KB4579311",
      "url": "https://patchblox.com/security/fix/microsoft/kb4579311",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for x64-based Systems",
      "fixedVersion": "19041.572",
      "fix": "KB4579311",
      "url": "https://patchblox.com/security/fix/microsoft/kb4579311",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1903 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1909 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4577671",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577671",
      "released": "2020-10-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 2004 (Server Core installation)",
      "fixedVersion": "19041.572",
      "fix": "KB4579311",
      "url": "https://patchblox.com/security/fix/microsoft/kb4579311",
      "released": "2020-10-13T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}