{
  "fix": "Mozilla Thunderbird (rm) 141.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.thunderbird.rm-141.0",
  "summary": "Mozilla Thunderbird (rm) 141.0, released July 22, 2025, fixes 53 CVEs in Mozilla Thunderbird (rm). None of them is reported as exploited. Patch Radar priority: Urgent. The latest Mozilla Thunderbird (rm) is 159.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Thunderbird (rm) 141.0",
  "released": "2025-07-22T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2025-8044, rated Critical",
  "supported": true,
  "cveCount": 53,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.03883,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Thunderbird (rm)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-rm",
      "fixedVersion": "141.0",
      "latestVersion": "159.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Thunderbird (rm)",
    "latestVersion": "159.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-rm"
  },
  "cves": [
    {
      "cveId": "CVE-2025-8044",
      "url": "https://patchblox.com/security/cve/CVE-2025-8044",
      "title": "Memory safety bugs fixed in Firefox 141 and Thunderbird 141",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00479,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8043",
      "url": "https://patchblox.com/security/cve/CVE-2025-8043",
      "title": "Incorrect URL truncation",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00434,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-16361",
      "url": "https://patchblox.com/security/cve/CVE-2026-16361",
      "title": "Memory safety bugs fixed in Thunderbird ESR 140.13",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.8,
      "epss": 0.00315,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6770",
      "url": "https://patchblox.com/security/cve/CVE-2026-6770",
      "title": "Other issue in the Storage: IndexedDB component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.03883,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6746",
      "url": "https://patchblox.com/security/cve/CVE-2026-6746",
      "title": "Use-after-free in the DOM: Core \u0026 HTML component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00946,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8028",
      "url": "https://patchblox.com/security/cve/CVE-2025-8028",
      "title": "Large branch table could lead to truncated instruction",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.0058,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8946",
      "url": "https://patchblox.com/security/cve/CVE-2026-8946",
      "title": "Incorrect boundary conditions in the Audio/Video: Web Codecs component",
      "priority": "High",
      "severity": "important",
      "cvss": 7.5,
      "epss": 0.0056,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8953",
      "url": "https://patchblox.com/security/cve/CVE-2026-8953",
      "title": "Sandbox escape due to use-after-free in the Disability Access APIs component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.6,
      "epss": 0.00532,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6785",
      "url": "https://patchblox.com/security/cve/CVE-2026-6785",
      "title": "Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00513,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8031",
      "url": "https://patchblox.com/security/cve/CVE-2025-8031",
      "title": "Incorrect URL stripping in CSP reports",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00511,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6786",
      "url": "https://patchblox.com/security/cve/CVE-2026-6786",
      "title": "Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00499,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6757",
      "url": "https://patchblox.com/security/cve/CVE-2026-6757",
      "title": "Invalid pointer in the JavaScript: WebAssembly component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00489,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6750",
      "url": "https://patchblox.com/security/cve/CVE-2026-6750",
      "title": "Privilege escalation in the Graphics: WebRender component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00483,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8091",
      "url": "https://patchblox.com/security/cve/CVE-2026-8091",
      "title": "Incorrect boundary conditions in the Audio/Video: Playback component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00469,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-14899",
      "url": "https://patchblox.com/security/cve/CVE-2026-14899",
      "title": "Off-by-one out of bounds read in MIME header parser for forwarding",
      "priority": "High",
      "severity": "moderate",
      "cvss": 8.8,
      "epss": 0.00469,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8034",
      "url": "https://patchblox.com/security/cve/CVE-2025-8034",
      "title": "Memory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00461,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8094",
      "url": "https://patchblox.com/security/cve/CVE-2026-8094",
      "title": "Other issue in the WebRTC component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00446,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8036",
      "url": "https://patchblox.com/security/cve/CVE-2025-8036",
      "title": "DNS rebinding circumvents CORS",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00446,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8027",
      "url": "https://patchblox.com/security/cve/CVE-2025-8027",
      "title": "JavaScript engine only wrote partial return value to stack",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00432,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8033",
      "url": "https://patchblox.com/security/cve/CVE-2025-8033",
      "title": "Incorrect JavaScript state machine for generators",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00432,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8954",
      "url": "https://patchblox.com/security/cve/CVE-2026-8954",
      "title": "Incorrect boundary conditions, integer overflow in the Audio/Video component",
      "priority": "High",
      "severity": "important",
      "cvss": 7.5,
      "epss": 0.00425,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8947",
      "url": "https://patchblox.com/security/cve/CVE-2026-8947",
      "title": "Use-after-free in the DOM: Bindings (WebIDL) component",
      "priority": "High",
      "severity": "important",
      "cvss": 7.5,
      "epss": 0.00413,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6749",
      "url": "https://patchblox.com/security/cve/CVE-2026-6749",
      "title": "Information disclosure due to uninitialized memory in the Graphics: Canvas2D component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00403,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8035",
      "url": "https://patchblox.com/security/cve/CVE-2025-8035",
      "title": "Memory safety bugs fixed in Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00401,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6747",
      "url": "https://patchblox.com/security/cve/CVE-2026-6747",
      "title": "Use-after-free in the WebRTC component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.004,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6748",
      "url": "https://patchblox.com/security/cve/CVE-2026-6748",
      "title": "Uninitialized memory in the Audio/Video: Web Codecs component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00399,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6772",
      "url": "https://patchblox.com/security/cve/CVE-2026-6772",
      "title": "Incorrect boundary conditions in the Libraries component in NSS",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.0039,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6754",
      "url": "https://patchblox.com/security/cve/CVE-2026-6754",
      "title": "Use-after-free in the JavaScript Engine component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00387,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8029",
      "url": "https://patchblox.com/security/cve/CVE-2025-8029",
      "title": "javascript: URLs executed on object and embed tags",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00376,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8030",
      "url": "https://patchblox.com/security/cve/CVE-2025-8030",
      "title": "Potential user-assisted code execution in \u201CCopy as cURL\u201D command",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00376,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8032",
      "url": "https://patchblox.com/security/cve/CVE-2025-8032",
      "title": "XSLT documents could bypass CSP",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00375,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8040",
      "url": "https://patchblox.com/security/cve/CVE-2025-8040",
      "title": "Memory safety bugs fixed in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00368,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6759",
      "url": "https://patchblox.com/security/cve/CVE-2026-6759",
      "title": "Use-after-free in the Widget: Cocoa component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00363,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8039",
      "url": "https://patchblox.com/security/cve/CVE-2025-8039",
      "title": "Search terms persisted in URL bar",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.0034,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-12329",
      "url": "https://patchblox.com/security/cve/CVE-2026-12329",
      "title": "Memory safety bug fixed in Thunderbird ESR 140.12",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.5,
      "epss": 0.00313,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6771",
      "url": "https://patchblox.com/security/cve/CVE-2026-6771",
      "title": "Mitigation bypass in the DOM: Security component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00309,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6751",
      "url": "https://patchblox.com/security/cve/CVE-2026-6751",
      "title": "Uninitialized memory in the Audio/Video: Web Codecs component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00307,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6752",
      "url": "https://patchblox.com/security/cve/CVE-2026-6752",
      "title": "Incorrect boundary conditions in the WebRTC component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00306,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6753",
      "url": "https://patchblox.com/security/cve/CVE-2026-6753",
      "title": "Incorrect boundary conditions in the WebRTC component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00306,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92021",
      "url": "https://patchblox.com/security/cve/CVE-2026-92021",
      "title": "Use-after-free in the JavaScript Engine: JIT component",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00282,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8038",
      "url": "https://patchblox.com/security/cve/CVE-2025-8038",
      "title": "CSP frame-src was not correctly enforced for paths",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00267,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-8037",
      "url": "https://patchblox.com/security/cve/CVE-2025-8037",
      "title": "Nameless cookies shadow secure cookies",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.1,
      "epss": 0.00266,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6766",
      "url": "https://patchblox.com/security/cve/CVE-2026-6766",
      "title": "Incorrect boundary conditions in the Libraries component in NSS",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00257,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92014",
      "url": "https://patchblox.com/security/cve/CVE-2026-92014",
      "title": "Privilege escalation due to incorrect boundary conditions in the Graphics component",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00239,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6764",
      "url": "https://patchblox.com/security/cve/CVE-2026-6764",
      "title": "Incorrect boundary conditions in the DOM: Device Interfaces component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00231,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6767",
      "url": "https://patchblox.com/security/cve/CVE-2026-6767",
      "title": "Other issue in the Libraries component in NSS",
      "priority": "High",
      "severity": "medium",
      "cvss": 8.8,
      "epss": 0.00227,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6769",
      "url": "https://patchblox.com/security/cve/CVE-2026-6769",
      "title": "Privilege escalation in the Debugger component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00226,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6761",
      "url": "https://patchblox.com/security/cve/CVE-2026-6761",
      "title": "Privilege escalation in the Networking component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00221,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6765",
      "url": "https://patchblox.com/security/cve/CVE-2026-6765",
      "title": "Information disclosure in the Form Autofill component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00215,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6763",
      "url": "https://patchblox.com/security/cve/CVE-2026-6763",
      "title": "Mitigation bypass in the File Handling component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00191,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6762",
      "url": "https://patchblox.com/security/cve/CVE-2026-6762",
      "title": "Spoofing issue in the DOM: Core \u0026 HTML component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00187,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-12330",
      "url": "https://patchblox.com/security/cve/CVE-2026-12330",
      "title": "Incorrect boundary conditions in the Internationalization component",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.5,
      "epss": 0.00164,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6776",
      "url": "https://patchblox.com/security/cve/CVE-2026-6776",
      "title": "Incorrect boundary conditions in the WebRTC: Networking component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.0011,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}