{
  "fix": "Microsoft Edge WebView2 Runtime 150.0.4078.96",
  "url": "https://patchblox.com/security/fix/windows-app/microsoft.edgewebview2runtime-150.0.4078.96",
  "summary": "Microsoft Edge WebView2 Runtime 150.0.4078.96, released July 23, 2026, fixes 9 CVEs in Microsoft Edge WebView2 Runtime. None of them is reported as exploited. Patch Radar priority: Urgent. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Microsoft Edge WebView2 Runtime 150.0.4078.96",
  "released": "2026-07-23T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-16416, rated Critical",
  "supported": true,
  "cveCount": 9,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0057,
  "maxCvss": 9.6,
  "appliesTo": [
    {
      "product": "Microsoft Edge WebView2 Runtime",
      "productUrl": "https://patchblox.com/security/product/windows-app/microsoft-edge-webview2-runtime",
      "fixedVersion": "150.0.4078.96",
      "latestVersion": "157.0.4341.42",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Microsoft Edge WebView2 Runtime",
    "latestVersion": "157.0.4341.42",
    "productUrl": "https://patchblox.com/security/product/windows-app/microsoft-edge-webview2-runtime"
  },
  "cves": [
    {
      "cveId": "CVE-2026-16416",
      "url": "https://patchblox.com/security/cve/CVE-2026-16416",
      "title": "Chromium: CVE-2026-16416 Integer overflow in Chromecast",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.3,
      "epss": 0.00131,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16420",
      "url": "https://patchblox.com/security/cve/CVE-2026-16420",
      "title": "Chromium: CVE-2026-16420 Type Confusion in WebAudio",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.0057,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16421",
      "url": "https://patchblox.com/security/cve/CVE-2026-16421",
      "title": "Chromium: CVE-2026-16421 Inappropriate implementation in WebAudio",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00523,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16418",
      "url": "https://patchblox.com/security/cve/CVE-2026-16418",
      "title": "Chromium: CVE-2026-16418 Stack buffer overflow in V8",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00453,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16423",
      "url": "https://patchblox.com/security/cve/CVE-2026-16423",
      "title": "Chromium: CVE-2026-16423 Use after free in UI",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00345,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16413",
      "url": "https://patchblox.com/security/cve/CVE-2026-16413",
      "title": "Chromium: CVE-2026-16413 Out of bounds write in ANGLE",
      "priority": "High",
      "severity": "high",
      "cvss": 9.6,
      "epss": 0.00271,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16417",
      "url": "https://patchblox.com/security/cve/CVE-2026-16417",
      "title": "Chromium: CVE-2026-16417 Uninitialized Use in Skia",
      "priority": "High",
      "severity": "low",
      "cvss": 9.6,
      "epss": 0.00235,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16414",
      "url": "https://patchblox.com/security/cve/CVE-2026-16414",
      "title": "Chromium: CVE-2026-16414 Insufficient validation of untrusted input in Chromecast",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00124,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16415",
      "url": "https://patchblox.com/security/cve/CVE-2026-16415",
      "title": "Chromium: CVE-2026-16415 Insufficient validation of untrusted input in Extensions",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.4,
      "epss": 0.00255,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-11T07:45:43Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}