{
  "fix": "Mozilla Firefox (en-US) 123.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox-123.0",
  "summary": "Mozilla Firefox (en-US) 123.0, released February 26, 2024, fixes 12 CVEs in Mozilla Firefox (en-US). None of them is reported as exploited. Patch Radar priority: Urgent. 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) 123.0",
  "released": "2024-02-26T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2024-2614, rated Critical",
  "supported": true,
  "cveCount": 12,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00945,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Firefox (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us",
      "fixedVersion": "123.0",
      "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-2024-2614",
      "url": "https://patchblox.com/security/cve/CVE-2024-2614",
      "title": "Mozilla Firefox ESR and 5 others: Out-of-bounds Write",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.00886,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1553",
      "url": "https://patchblox.com/security/cve/CVE-2024-1553",
      "title": "Mozilla Firefox ESR and 5 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.1,
      "epss": 0.00866,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1546",
      "url": "https://patchblox.com/security/cve/CVE-2024-1546",
      "title": "Mozilla Firefox ESR and 5 others: Out-of-bounds Read",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00718,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1547",
      "url": "https://patchblox.com/security/cve/CVE-2024-1547",
      "title": "Mozilla Firefox ESR and 5 others: Authentication Bypass by Spoofing",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00679,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1557",
      "url": "https://patchblox.com/security/cve/CVE-2024-1557",
      "title": "Mozilla Firefox ESR and 3 others: Out-of-bounds Write",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00558,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1555",
      "url": "https://patchblox.com/security/cve/CVE-2024-1555",
      "title": "Mozilla Firefox ESR and 3 others: Authentication Bypass by Spoofing",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.3,
      "epss": 0.00478,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1554",
      "url": "https://patchblox.com/security/cve/CVE-2024-1554",
      "title": "Mozilla Firefox ESR and 3 others: Insufficient Verification of Data Authenticity",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00382,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1548",
      "url": "https://patchblox.com/security/cve/CVE-2024-1548",
      "title": "Mozilla Firefox ESR and 5 others: A website could have obscured the fullscreen notification by using a dropdown select input element.",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.1,
      "epss": 0.00945,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1551",
      "url": "https://patchblox.com/security/cve/CVE-2024-1551",
      "title": "Mozilla Firefox ESR and 5 others: Reliance on Cookies without Validation and Integrity Checking",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.1,
      "epss": 0.00743,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1550",
      "url": "https://patchblox.com/security/cve/CVE-2024-1550",
      "title": "Mozilla Firefox ESR and 5 others: Improper Restriction of Rendered UI Layers or Frames",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.1,
      "epss": 0.00575,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1549",
      "url": "https://patchblox.com/security/cve/CVE-2024-1549",
      "title": "Mozilla Firefox ESR and 5 others: If a website set a large custom cursor, portions of the cursor could have overlapped with the permission\u2026",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.1,
      "epss": 0.00529,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-1556",
      "url": "https://patchblox.com/security/cve/CVE-2024-1556",
      "title": "Mozilla Firefox ESR and 3 others: Improper Check for Unusual or Exceptional Conditions",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00474,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}