{
  "cveId": "CVE-2020-15523",
  "url": "https://patchblox.com/security/cve/CVE-2020-15523",
  "summary": "CVE-2020-15523 is fixed in 2 products on 1 platform, first by Python 3.8 3.8.5, released July 20, 2020. 2 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Python 3.6 and 3 others: In Python 3.6 through 3.6.10, 3.7 through 3.7.8, 3.8 through 3.8.4rc1, and 3.9 through 3.9.0b4 on Windows,\u2026",
  "description": "In Python 3.6 through 3.6.10, 3.7 through 3.7.8, 3.8 through 3.8.4rc1, and 3.9 through 3.9.0b4 on Windows, a Trojan horse python3.dll might be used in cases where CPython is embedded in a native application. This occurs because python3X.dll may use an invalid search path for python3.dll loading (after Py_SetPath has been used). NOTE: this issue CANNOT occur when using python.exe from a standard (non-embedded) Python installation on Windows.",
  "published": "2020-07-04T23:15:10Z",
  "severity": "",
  "cvss": 7.8,
  "epss": 0.00911,
  "epssPercentile": 0.60237,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2020-15523",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Python 3.7",
      "fixedVersion": "3.7.9",
      "fix": "Python 3.7 3.7.9",
      "url": "https://patchblox.com/security/fix/windows-app/python.python.3.7-3.7.9",
      "released": "2020-08-15T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Python 3.8",
      "fixedVersion": "3.8.5",
      "fix": "Python 3.8 3.8.5",
      "url": "https://patchblox.com/security/fix/windows-app/python.python.3.8-3.8.5",
      "released": "2020-07-20T00:00:00Z"
    }
  ],
  "noFixYet": [
    {
      "platform": "Windows apps",
      "product": "Python 3.5",
      "status": "no-fix",
      "affectedVersion": "3.5.4"
    },
    {
      "platform": "Windows apps",
      "product": "Python 3.6",
      "status": "no-fix",
      "affectedVersion": "3.6.8"
    }
  ],
  "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"
  }
}