{
  "cveId": "CVE-2021-39840",
  "url": "https://patchblox.com/security/cve/CVE-2021-39840",
  "summary": "CVE-2021-39840 is fixed in Adobe Acrobat Reader DC on 1 platform by Adobe Acrobat Reader DC 21.007.20091 (version 21.007.20091), released September 9, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Adobe Acrobat Reader DC AcroForm Field Use-After-Free Remote Code Execution Vulnerability",
  "description": "Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability when processing AcroForms that could result in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.",
  "published": "2021-09-29T16:15:08Z",
  "severity": "",
  "cvss": 7.8,
  "cwe": "CWE-416: Use After Free (CWE-416)",
  "epss": 0.60798,
  "epssPercentile": 0.99156,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2021-39840",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Adobe Acrobat Reader DC",
      "fixedVersion": "21.007.20091",
      "fix": "Adobe Acrobat Reader DC 21.007.20091",
      "url": "https://patchblox.com/security/fix/windows-app/adobe.acrobat.reader.32-bit-21.007.20091",
      "released": "2021-09-09T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}