{
  "fix": "Mozilla Firefox (en-US) 131.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox-131.0",
  "summary": "Mozilla Firefox (en-US) 131.0, released October 2, 2024, fixes 13 CVEs in Mozilla Firefox (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Firefox (en-US) 131.0",
  "released": "2024-10-02T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2024-9401, high severity",
  "supported": true,
  "cveCount": 13,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00739,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Firefox (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us",
      "fixedVersion": "131.0",
      "latestVersion": "159.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Firefox (en-US)",
    "latestVersion": "159.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us"
  },
  "cves": [
    {
      "cveId": "CVE-2024-9401",
      "url": "https://patchblox.com/security/cve/CVE-2024-9401",
      "title": "Mozilla Firefox ESR and 7 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00739,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9402",
      "url": "https://patchblox.com/security/cve/CVE-2024-9402",
      "title": "Mozilla Firefox ESR and 7 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00615,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9396",
      "url": "https://patchblox.com/security/cve/CVE-2024-9396",
      "title": "Mozilla Firefox ESR and 7 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00587,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9392",
      "url": "https://patchblox.com/security/cve/CVE-2024-9392",
      "title": "Mozilla Firefox ESR and 7 others: Origin Validation Error",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00535,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9394",
      "url": "https://patchblox.com/security/cve/CVE-2024-9394",
      "title": "Mozilla Firefox ESR and 7 others: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.6,
      "epss": 0.00521,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9400",
      "url": "https://patchblox.com/security/cve/CVE-2024-9400",
      "title": "Mozilla Firefox ESR and 7 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00506,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9399",
      "url": "https://patchblox.com/security/cve/CVE-2024-9399",
      "title": "Mozilla Firefox ESR and 7 others: Improper Resource Shutdown or Release",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00495,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9403",
      "url": "https://patchblox.com/security/cve/CVE-2024-9403",
      "title": "Mozilla Firefox ESR and 7 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00447,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9393",
      "url": "https://patchblox.com/security/cve/CVE-2024-9393",
      "title": "Mozilla Firefox ESR and 7 others: Origin Validation Error",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.6,
      "epss": 0.00397,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9398",
      "url": "https://patchblox.com/security/cve/CVE-2024-9398",
      "title": "Mozilla Firefox ESR and 7 others: Observable Discrepancy",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.3,
      "epss": 0.00566,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9397",
      "url": "https://patchblox.com/security/cve/CVE-2024-9397",
      "title": "Mozilla Firefox ESR and 7 others: Improper Restriction of Rendered UI Layers or Frames",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.1,
      "epss": 0.00373,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9395",
      "url": "https://patchblox.com/security/cve/CVE-2024-9395",
      "title": "Mozilla Firefox ESR and 4 others: A specially crafted filename containing a large number of spaces could obscure the file\u0027s extension when\u2026",
      "priority": "Routine",
      "cvss": 5.3,
      "epss": 0.00325,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-9391",
      "url": "https://patchblox.com/security/cve/CVE-2024-9391",
      "title": "Mozilla Firefox ESR and 4 others: Authentication Bypass by Spoofing",
      "priority": "Routine",
      "cvss": 6.5,
      "epss": 0.0028,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}