{
  "fix": "Firefox Developer Edition (en-US) 126.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox.developeredition-126.0",
  "summary": "Firefox Developer Edition (en-US) 126.0, released April 16, 2024, fixes 17 CVEs in Firefox Developer Edition (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Firefox Developer Edition (en-US) 126.0",
  "released": "2024-04-16T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2024-4367, high severity",
  "supported": true,
  "cveCount": 17,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.7066,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Firefox Developer Edition (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/firefox-developer-edition-en-us",
      "fixedVersion": "126.0",
      "latestVersion": "156.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Firefox Developer Edition (en-US)",
    "latestVersion": "156.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/firefox-developer-edition-en-us"
  },
  "cves": [
    {
      "cveId": "CVE-2024-4367",
      "url": "https://patchblox.com/security/cve/CVE-2024-4367",
      "title": "Mozilla Firefox ESR and 6 others: Improper Check for Unusual or Exceptional Conditions",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.7066,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4770",
      "url": "https://patchblox.com/security/cve/CVE-2024-4770",
      "title": "Mozilla Firefox ESR and 6 others: Use After Free",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00592,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4764",
      "url": "https://patchblox.com/security/cve/CVE-2024-4764",
      "title": "Mozilla Firefox ESR and 4 others: Use After Free",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00571,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4773",
      "url": "https://patchblox.com/security/cve/CVE-2024-4773",
      "title": "Mozilla Firefox ESR and 4 others: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
      "priority": "High",
      "severity": "Medium",
      "cvss": 7.5,
      "epss": 0.00541,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-6604",
      "url": "https://patchblox.com/security/cve/CVE-2024-6604",
      "title": "Memory safety bugs fixed in Firefox 128, Firefox ESR 115.13, Thunderbird 128, and Thunderbird 115.13",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.0054,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4777",
      "url": "https://patchblox.com/security/cve/CVE-2024-4777",
      "title": "Mozilla Firefox ESR and 6 others: Use After Free",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00536,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4771",
      "url": "https://patchblox.com/security/cve/CVE-2024-4771",
      "title": "Mozilla Firefox ESR and 4 others: Use After Free",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.6,
      "epss": 0.00523,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4778",
      "url": "https://patchblox.com/security/cve/CVE-2024-4778",
      "title": "Mozilla Firefox ESR and 4 others: Improper Handling of Overlap Between Protected Memory Ranges",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00441,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4776",
      "url": "https://patchblox.com/security/cve/CVE-2024-4776",
      "title": "Mozilla Firefox ESR and 4 others: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.2,
      "epss": 0.00417,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4765",
      "url": "https://patchblox.com/security/cve/CVE-2024-4765",
      "title": "Mozilla Firefox ESR and 4 others: Use of a Broken or Risky Cryptographic Algorithm",
      "priority": "High",
      "cvss": 8.1,
      "epss": 0.00274,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4768",
      "url": "https://patchblox.com/security/cve/CVE-2024-4768",
      "title": "Mozilla Firefox ESR and 6 others: Improper Preservation of Permissions",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.1,
      "epss": 0.00539,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4767",
      "url": "https://patchblox.com/security/cve/CVE-2024-4767",
      "title": "Mozilla Firefox ESR and 6 others: Exposure of Private Personal Information to an Unauthorized Actor",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.1,
      "epss": 0.00492,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-10941",
      "url": "https://patchblox.com/security/cve/CVE-2024-10941",
      "title": "Mozilla Firefox ESR and 4 others: Improper Neutralization of Invalid Characters in Identifiers in Web Pages",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.0043,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4774",
      "url": "https://patchblox.com/security/cve/CVE-2024-4774",
      "title": "Mozilla Firefox ESR and 4 others: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00372,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4769",
      "url": "https://patchblox.com/security/cve/CVE-2024-4769",
      "title": "Mozilla Firefox ESR and 6 others: Insufficient Type Distinction",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.1,
      "epss": 0.00369,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4775",
      "url": "https://patchblox.com/security/cve/CVE-2024-4775",
      "title": "Mozilla Firefox ESR and 4 others: Missing Handler",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.9,
      "epss": 0.00218,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-4772",
      "url": "https://patchblox.com/security/cve/CVE-2024-4772",
      "title": "Mozilla Firefox ESR and 4 others: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.9,
      "epss": 0.00217,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "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"
  }
}