{
  "cveId": "CVE-2017-8637",
  "url": "https://patchblox.com/security/cve/CVE-2017-8637",
  "summary": "CVE-2017-8637 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": "Scripting Engine Security Feature Bypass Vulnerability",
  "description": "\u003Cp\u003EA security feature bypass vulnerability exists in Microsoft Edge as a result of how memory is accessed in code compiled by the Edge Just-In-Time (JIT) compiler that allows Arbitrary Code Guard (ACG) to be bypassed. By itself, this ACG bypass vulnerability does not allow arbitrary code execution. However, an attacker could use the ACG bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, to run arbitrary code on a target system.\u003C/p\u003E\n\u003Cp\u003ETo exploit the ACG bypass vulnerability, a user must be logged on and running an affected version of Microsoft Edge. The user would then need to browse to a malicious website.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the ACG bypass vulnerability by helping to ensure that Microsoft Edge properly handles accessing memory in code compiled by the Edge JIT compiler.\u003C/p\u003E",
  "published": "2017-08-08T07:00:00Z",
  "severity": "Important",
  "cvss": 3.7,
  "epss": 0.05014,
  "epssPercentile": 0.92284,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8637",
  "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"
}