{
  "cveId": "CVE-2025-21283",
  "url": "https://patchblox.com/security/cve/CVE-2025-21283",
  "summary": "CVE-2025-21283 is fixed in 4 products on 1 platform, first by Microsoft Edge Dev 134.0.3081.2, released January 22, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability",
  "description": "Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability",
  "published": "2025-02-06T14:00:00Z",
  "severity": "Important",
  "cvss": 8.8,
  "cwe": "Insufficient Granularity of Address Regions Protected by Register Locks",
  "epss": 0.01485,
  "epssPercentile": 0.74168,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21283",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Microsoft Edge",
      "fixedVersion": "133.0.3065.51",
      "fix": "Microsoft Edge 133.0.3065.51",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge-133.0.3065.51",
      "released": "2025-02-06T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Beta",
      "fixedVersion": "135.0.3179.33",
      "fix": "Microsoft Edge Beta 135.0.3179.33",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.beta-135.0.3179.33",
      "released": "2025-03-24T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Dev",
      "fixedVersion": "134.0.3081.2",
      "fix": "Microsoft Edge Dev 134.0.3081.2",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.dev-134.0.3081.2",
      "released": "2025-01-22T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge WebView2 Runtime",
      "fixedVersion": "133.0.3065.51",
      "fix": "Microsoft Edge WebView2 Runtime 133.0.3065.51",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edgewebview2runtime-133.0.3065.51",
      "released": "2025-02-06T00:00:00Z"
    }
  ],
  "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"
  }
}