{
  "fix": "Mozilla Firefox (fa) 143.0.3",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox.fa-143.0.3",
  "summary": "Mozilla Firefox (fa) 143.0.3, released September 30, 2025, fixes 2 CVEs in Mozilla Firefox (fa). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Firefox (fa) is 159.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Firefox (fa) 143.0.3",
  "released": "2025-09-30T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-11152, high severity",
  "supported": true,
  "cveCount": 2,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00284,
  "maxCvss": 8.6,
  "appliesTo": [
    {
      "product": "Mozilla Firefox (fa)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-fa",
      "fixedVersion": "143.0.3",
      "latestVersion": "159.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Firefox (fa)",
    "latestVersion": "159.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-fa"
  },
  "cves": [
    {
      "cveId": "CVE-2025-11152",
      "url": "https://patchblox.com/security/cve/CVE-2025-11152",
      "title": "Sandbox escape due to integer overflow in the Graphics: Canvas2D component",
      "priority": "High",
      "cvss": 8.6,
      "epss": 0.00284,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-11153",
      "url": "https://patchblox.com/security/cve/CVE-2025-11153",
      "title": "JIT miscompilation in the JavaScript Engine: JIT component",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00244,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-10T20:03:11Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}