{
  "cveId": "CVE-2017-8642",
  "url": "https://patchblox.com/security/cve/CVE-2017-8642",
  "summary": "CVE-2017-8642 is fixed in 2 products on 1 platform, first by KB4034674, released August 8, 2017. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Microsoft Edge Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EAn elevation of privilege vulnerability exists when Microsoft Edge does not properly validate JavaScript under specific conditions, potentially allowing script to run with elevated privileges.\u003C/p\u003E\n\u003Cp\u003EIn a web-based attack scenario, an attacker could host a website in an attempt to exploit the vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could trick a user into clicking a link that takes the user to the attacker\u0027s site. An attacker who successfully exploited the vulnerability could elevate privileges in affected versions of Microsoft Edge. An attacker could then leverage these privileges with another vulnerability to run arbitrary code with medium integrity level privileges (permissions of the current user).\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how Microsoft Edge validates and sanitizes JavaScript parameters.\u003C/p\u003E",
  "published": "2017-08-08T07:00:00Z",
  "severity": "Important",
  "cvss": 6.1,
  "epss": 0.02956,
  "epssPercentile": 0.87248,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Unlikely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8642",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems",
      "fixedVersion": "15063.540",
      "fix": "KB4034674",
      "url": "https://patchblox.com/security/fix/microsoft/kb4034674",
      "released": "2017-08-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems",
      "fixedVersion": "15063.540",
      "fix": "KB4034674",
      "url": "https://patchblox.com/security/fix/microsoft/kb4034674",
      "released": "2017-08-08T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T06:34:28Z"
}