{
  "fix": "Microsoft Edge Beta 137.0.3296.52",
  "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.beta-137.0.3296.52",
  "summary": "Microsoft Edge Beta 137.0.3296.52, released May 29, 2025, fixes 8 CVEs in Microsoft Edge Beta. None of them is reported as exploited. Patch Radar priority: High. The latest Microsoft Edge Beta is 158.0.4370.16, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Microsoft Edge Beta 137.0.3296.52",
  "released": "2025-05-29T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-5063, high severity",
  "supported": true,
  "cveCount": 8,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0367,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "Microsoft Edge Beta",
      "productUrl": "https://patchblox.com/security/product/windows-app/microsoft-edge-beta",
      "fixedVersion": "137.0.3296.52",
      "latestVersion": "158.0.4370.16",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Microsoft Edge Beta",
    "latestVersion": "158.0.4370.16",
    "productUrl": "https://patchblox.com/security/product/windows-app/microsoft-edge-beta"
  },
  "cves": [
    {
      "cveId": "CVE-2025-5063",
      "url": "https://patchblox.com/security/cve/CVE-2025-5063",
      "title": "Chromium: CVE-2025-5063 Use after free in Compositing",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.0367,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5280",
      "url": "https://patchblox.com/security/cve/CVE-2025-5280",
      "title": "Chromium: CVE-2025-5280 Out of bounds write in V8",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.02914,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5283",
      "url": "https://patchblox.com/security/cve/CVE-2025-5283",
      "title": "Chromium: CVE-2025-5283 Use after free in libvpx",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00642,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5065",
      "url": "https://patchblox.com/security/cve/CVE-2025-5065",
      "title": "Chromium: CVE-2025-5065 Inappropriate implementation in FileSystemAccess API",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 6.5,
      "epss": 0.00405,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5066",
      "url": "https://patchblox.com/security/cve/CVE-2025-5066",
      "title": "Chromium: CVE-2025-5066 Inappropriate implementation in Messages",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 6.5,
      "epss": 0.00405,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5067",
      "url": "https://patchblox.com/security/cve/CVE-2025-5067",
      "title": "Chromium: CVE-2025-5067 Inappropriate implementation in Tab Strip",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.4,
      "epss": 0.00362,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5064",
      "url": "https://patchblox.com/security/cve/CVE-2025-5064",
      "title": "Chromium: CVE-2025-5064 Inappropriate implementation in Background Fetch API",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.4,
      "epss": 0.00323,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5281",
      "url": "https://patchblox.com/security/cve/CVE-2025-5281",
      "title": "Chromium: CVE-2025-5281 Inappropriate implementation in BFCache",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.4,
      "epss": 0.00241,
      "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"
  }
}