{
  "cveId": "CVE-2026-48770",
  "url": "https://patchblox.com/security/cve/CVE-2026-48770",
  "summary": "CVE-2026-48770 is fixed in Notepad\u002B\u002B on 1 platform by Notepad\u002B\u002B 8.9.6.1 (version 8.9.6.1), released May 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Notepad\u002B\u002B WM_COPYDATA COPYDATA_FULL_CMDLINE local DoS crash",
  "description": "Notepad\u002B\u002B is a free and open-source source code editor. Prior to 8.9.6.1, a local process in the same interactive Windows session can send a malformed WM_COPYDATA message to Notepad\u002B\u002B using the COPYDATA_FULL_CMDLINE path. The handler appears to process COPYDATASTRUCT.lpData as an unbounded NUL-terminated wchar_t* instead of enforcing COPYDATASTRUCT.cbData. This vulnerability is fixed in 8.9.6.1.",
  "published": "2026-06-26T21:16:34Z",
  "severity": "",
  "cvss": 5,
  "cwe": "CWE-125: Out-of-bounds Read",
  "epss": 0.00142,
  "epssPercentile": 0.03543,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-48770",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Notepad\u002B\u002B",
      "fixedVersion": "8.9.6.1",
      "fix": "Notepad\u002B\u002B 8.9.6.1",
      "url": "https://patchblox.com/security/fix/windows-app/notepad-.notepad-8.9.6.1",
      "released": "2026-05-26T00:00:00Z"
    }
  ],
  "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"
  }
}