{
  "cveId": "CVE-2026-5525",
  "url": "https://patchblox.com/security/cve/CVE-2026-5525",
  "summary": "CVE-2026-5525 is fixed in Notepad\u002B\u002B on 1 platform by Notepad\u002B\u002B 8.9.4 (version 8.9.4), released April 26, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Stack-Based Buffer Overflow in Notepad\u002B\u002B File Drop Handler leads to DoS",
  "description": "A stack-based buffer overflow vulnerability exists in Notepad\u002B\u002B version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds checking, resulting in a stack buffer overflow and application crash (STATUS_STACK_BUFFER_OVERRUN).",
  "published": "2026-04-10T08:16:26Z",
  "severity": "",
  "cvss": 7.8,
  "cwe": "CWE-121: Stack-based Buffer Overflow",
  "epss": 0.00168,
  "epssPercentile": 0.06231,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-5525",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Notepad\u002B\u002B",
      "fixedVersion": "8.9.4",
      "fix": "Notepad\u002B\u002B 8.9.4",
      "url": "https://patchblox.com/security/fix/windows-app/notepad-.notepad-8.9.4",
      "released": "2026-04-26T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}