{
  "fix": "Mozilla Thunderbird ESR (ms) 128.10.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.thunderbird.esr.ms-128.10.0",
  "summary": "Mozilla Thunderbird ESR (ms) 128.10.0, released April 29, 2025, fixes 4 CVEs in Mozilla Thunderbird ESR (ms). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Thunderbird ESR (ms) is 153.7.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Thunderbird ESR (ms) 128.10.0",
  "released": "2025-04-29T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-2817, high severity",
  "supported": true,
  "cveCount": 4,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00667,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "Mozilla Thunderbird ESR (ms)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-esr-ms",
      "fixedVersion": "128.10.0",
      "latestVersion": "153.7.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Thunderbird ESR (ms)",
    "latestVersion": "153.7.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-esr-ms"
  },
  "cves": [
    {
      "cveId": "CVE-2025-2817",
      "url": "https://patchblox.com/security/cve/CVE-2025-2817",
      "title": "Privilege escalation in Thunderbird Updater",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.00667,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4093",
      "url": "https://patchblox.com/security/cve/CVE-2025-4093",
      "title": "Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00491,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-3875",
      "url": "https://patchblox.com/security/cve/CVE-2025-3875",
      "title": "Sender Spoofing via Malformed From Header in Thunderbird",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.00396,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4084",
      "url": "https://patchblox.com/security/cve/CVE-2025-4084",
      "title": "Potential local code execution in \u0022copy as cURL\u0022 command",
      "priority": "Routine",
      "cvss": 5.7,
      "epss": 0.00446,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-11T19:49:26Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}