{
  "fix": "Mozilla Thunderbird ESR (br) 140.1.1",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.thunderbird.esr.br-140.1.1",
  "summary": "Mozilla Thunderbird ESR (br) 140.1.1, released August 5, 2025, fixes 32 CVEs in Mozilla Thunderbird ESR (br). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Thunderbird ESR (br) is 153.7.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Thunderbird ESR (br) 140.1.1",
  "released": "2025-08-05T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-0247, high severity",
  "supported": true,
  "cveCount": 32,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.10695,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Thunderbird ESR (br)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-esr-br",
      "fixedVersion": "140.1.1",
      "latestVersion": "153.7.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Thunderbird ESR (br)",
    "latestVersion": "153.7.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-esr-br"
  },
  "cves": [
    {
      "cveId": "CVE-2025-0247",
      "url": "https://patchblox.com/security/cve/CVE-2025-0247",
      "title": "Memory safety bugs fixed in Firefox 134 and Thunderbird 134",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.10695,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-6436",
      "url": "https://patchblox.com/security/cve/CVE-2025-6436",
      "title": "Memory safety bugs fixed in Firefox 140 and Thunderbird 140",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.04256,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-11705",
      "url": "https://patchblox.com/security/cve/CVE-2024-11705",
      "title": "Mozilla Firefox ESR and 8 others: NULL Pointer Dereference",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.1,
      "epss": 0.0066,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-1011",
      "url": "https://patchblox.com/security/cve/CVE-2025-1011",
      "title": "A bug in WebAssembly code generation could result in a crash",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00629,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-11702",
      "url": "https://patchblox.com/security/cve/CVE-2024-11702",
      "title": "Mozilla Firefox ESR and 8 others: Inappropriate Encoding for Output Context",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00531,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-11700",
      "url": "https://patchblox.com/security/cve/CVE-2024-11700",
      "title": "Mozilla Firefox ESR and 8 others: Improper Restriction of Rendered UI Layers or Frames",
      "priority": "High",
      "cvss": 8.1,
      "epss": 0.00511,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4091",
      "url": "https://patchblox.com/security/cve/CVE-2025-4091",
      "title": "Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00507,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-1942",
      "url": "https://patchblox.com/security/cve/CVE-2025-1942",
      "title": "Disclosure of uninitialized memory when .toUpperCase() causes string to get longer",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00483,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-3034",
      "url": "https://patchblox.com/security/cve/CVE-2025-3034",
      "title": "Memory safety bugs fixed in Firefox 137 and Thunderbird 137",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00482,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5262",
      "url": "https://patchblox.com/security/cve/CVE-2025-5262",
      "title": "Mozilla Thunderbird ESR and 2 others: Double Free",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00464,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4083",
      "url": "https://patchblox.com/security/cve/CVE-2025-4083",
      "title": "Process isolation bypass using \u0022javascript:\u0022 URI links in cross-origin frames",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.1,
      "epss": 0.00459,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-6435",
      "url": "https://patchblox.com/security/cve/CVE-2025-6435",
      "title": "Save as in Devtools could download files without sanitizing the extension",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00457,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-1012",
      "url": "https://patchblox.com/security/cve/CVE-2025-1012",
      "title": "Use-after-free during concurrent delazification",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00449,
      "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-2025-1943",
      "url": "https://patchblox.com/security/cve/CVE-2025-1943",
      "title": "Memory safety bugs fixed in Firefox 136 and Thunderbird 136",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.2,
      "epss": 0.00437,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-3032",
      "url": "https://patchblox.com/security/cve/CVE-2025-3032",
      "title": "Leaking file descriptors from the fork server",
      "priority": "High",
      "severity": "Medium",
      "cvss": 7.4,
      "epss": 0.00406,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-1930",
      "url": "https://patchblox.com/security/cve/CVE-2025-1930",
      "title": "AudioIPC StreamData could trigger a use-after-free in the Browser process",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.00401,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-5272",
      "url": "https://patchblox.com/security/cve/CVE-2025-5272",
      "title": "Memory safety bugs fixed in Firefox 139 and Thunderbird 139",
      "priority": "High",
      "severity": "Medium",
      "cvss": 7.3,
      "epss": 0.00343,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4087",
      "url": "https://patchblox.com/security/cve/CVE-2025-4087",
      "title": "Unsafe attribute access during XPath parsing",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00323,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4085",
      "url": "https://patchblox.com/security/cve/CVE-2025-4085",
      "title": "Potential information leakage and privilege escalation in UITour actor",
      "priority": "High",
      "severity": "Medium",
      "cvss": 7.1,
      "epss": 0.00308,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-3033",
      "url": "https://patchblox.com/security/cve/CVE-2025-3033",
      "title": "Opening local .url files could lead to another file being opened",
      "priority": "High",
      "cvss": 7.7,
      "epss": 0.00174,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-11706",
      "url": "https://patchblox.com/security/cve/CVE-2024-11706",
      "title": "Mozilla Firefox ESR and 8 others: NULL Pointer Dereference",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00499,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4082",
      "url": "https://patchblox.com/security/cve/CVE-2025-4082",
      "title": "WebGL shader attribute memory corruption in Thunderbird for macOS",
      "priority": "Routine",
      "cvss": 5.9,
      "epss": 0.00459,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-11701",
      "url": "https://patchblox.com/security/cve/CVE-2024-11701",
      "title": "Mozilla Firefox ESR and 8 others: Authentication Bypass by Spoofing",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.0042,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-10468",
      "url": "https://patchblox.com/security/cve/CVE-2024-10468",
      "title": "Mozilla Firefox ESR and 7 others: Allocation of Resources Without Limits or Throttling",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.3,
      "epss": 0.00416,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-11708",
      "url": "https://patchblox.com/security/cve/CVE-2024-11708",
      "title": "Mozilla Firefox ESR and 8 others: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00353,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4090",
      "url": "https://patchblox.com/security/cve/CVE-2025-4090",
      "title": "Leaked library paths in Thunderbird for Android",
      "priority": "Routine",
      "cvss": 5.3,
      "epss": 0.00335,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4092",
      "url": "https://patchblox.com/security/cve/CVE-2025-4092",
      "title": "Memory safety bugs fixed in Firefox 138 and Thunderbird 138",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00312,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-3031",
      "url": "https://patchblox.com/security/cve/CVE-2025-3031",
      "title": "JIT optimization bug with different stack slot sizes",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00305,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4086",
      "url": "https://patchblox.com/security/cve/CVE-2025-4086",
      "title": "Specially crafted filename could be used to obscure download type",
      "priority": "Routine",
      "cvss": 6.5,
      "epss": 0.00298,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4089",
      "url": "https://patchblox.com/security/cve/CVE-2025-4089",
      "title": "Potential local code execution in \u0022copy as cURL\u0022 command",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.1,
      "epss": 0.00187,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-4088",
      "url": "https://patchblox.com/security/cve/CVE-2025-4088",
      "title": "Cross-site request forgery via storage access API redirects",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.0018,
      "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"
  }
}