{
  "fix": "Mozilla Firefox (en-US) 98.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox-98.0",
  "summary": "Mozilla Firefox (en-US) 98.0, released March 8, 2022, fixes 6 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) 98.0",
  "released": "2022-03-08T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2022-26384, rated Critical",
  "supported": true,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00972,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Firefox (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us",
      "fixedVersion": "98.0",
      "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-2022-26384",
      "url": "https://patchblox.com/security/cve/CVE-2022-26384",
      "title": "Mozilla Thunderbird and 4 others: Protection Mechanism Failure",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00972,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-26381",
      "url": "https://patchblox.com/security/cve/CVE-2022-26381",
      "title": "Mozilla Thunderbird and 4 others: Use After Free",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00874,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-26383",
      "url": "https://patchblox.com/security/cve/CVE-2022-26383",
      "title": "Mozilla Thunderbird and 4 others: User Interface (UI) Misrepresentation of Critical Information",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00725,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-26387",
      "url": "https://patchblox.com/security/cve/CVE-2022-26387",
      "title": "Mozilla Thunderbird and 4 others: Time-of-check Time-of-use (TOCTOU) Race Condition",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00664,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-26385",
      "url": "https://patchblox.com/security/cve/CVE-2022-26385",
      "title": "Mozilla Firefox ESR and 2 others: Use After Free",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00576,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-26382",
      "url": "https://patchblox.com/security/cve/CVE-2022-26382",
      "title": "Mozilla Firefox ESR and 2 others: Observable Discrepancy",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.00513,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}