{
  "cveId": "CVE-2026-66314",
  "url": "https://patchblox.com/security/cve/CVE-2026-66314",
  "summary": "CVE-2026-66314 is fixed in 4 products on 2 platforms, first by Microsoft Edge Dev 152.0.4167.0, released July 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability",
  "description": "\u003Cp\u003ETime-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.\u003C/p\u003E",
  "published": "2026-07-31T07:00:00Z",
  "severity": "Important",
  "cvss": 6.5,
  "cwe": "Time-of-check Time-of-use (TOCTOU) Race Condition",
  "epss": 0.00574,
  "epssPercentile": 0.47695,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Unlikely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66314",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Microsoft Edge",
      "fixedVersion": "151.0.4129.59",
      "fix": "Microsoft Edge 151.0.4129.59",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge-151.0.4129.59",
      "released": "2026-07-31T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Beta",
      "fixedVersion": "151.0.4129.59",
      "fix": "Microsoft Edge Beta 151.0.4129.59",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.beta-151.0.4129.59",
      "released": "2026-07-31T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Dev",
      "fixedVersion": "152.0.4167.0",
      "fix": "Microsoft Edge Dev 152.0.4167.0",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.dev-152.0.4167.0",
      "released": "2026-07-20T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge WebView2 Runtime",
      "fixedVersion": "151.0.4129.59",
      "fix": "Microsoft Edge WebView2 Runtime 151.0.4129.59",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edgewebview2runtime-151.0.4129.59",
      "released": "2026-07-31T00:00:00Z"
    },
    {
      "platform": "macos",
      "product": "Microsoft Edge",
      "fixedVersion": "151.0.4129.59",
      "fix": "Microsoft Edge 151.0.4129.59",
      "url": "https://patchblox.com/security/fix/macos/com.microsoft.edgemac-151.0.4129.59",
      "released": "2026-07-31T09:42:48Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}