{
  "cveId": "CVE-2026-40366",
  "url": "https://patchblox.com/security/cve/CVE-2026-40366",
  "summary": "CVE-2026-40366 is fixed in 2 products on 1 platform, first by KB5002858, released May 12, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "Microsoft Word Remote Code Execution Vulnerability",
  "description": "\u003Cp\u003EAccess of resource using incompatible type (\u0027type confusion\u0027) in Microsoft Office Word allows an unauthorized attacker to execute code locally.\u003C/p\u003E",
  "published": "2026-05-12T07:00:00Z",
  "severity": "Critical",
  "cvss": 8.4,
  "cwe": "Use After Free",
  "epss": 0.00383,
  "epssPercentile": 0.32576,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40366",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft Word 2016 (32-bit edition)",
      "fixedVersion": "",
      "fix": "KB5002858",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002858",
      "released": "2026-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Word 2016 (64-bit edition)",
      "fixedVersion": "",
      "fix": "KB5002858",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002858",
      "released": "2026-05-12T07:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}