{
  "fix": "Mozilla Thunderbird ESR (da) 153.7.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.thunderbird.esr.da-153.7.0",
  "summary": "Mozilla Thunderbird ESR (da) 153.7.0, released November 10, 2026, fixes 45 CVEs in Mozilla Thunderbird ESR (da). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Thunderbird ESR (da) 153.7.0",
  "released": "2026-11-10T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-74989, rated Critical",
  "supported": true,
  "cveCount": 45,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0057,
  "maxCvss": 10,
  "appliesTo": [
    {
      "product": "Mozilla Thunderbird ESR (da)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-esr-da",
      "fixedVersion": "153.7.0",
      "latestVersion": "153.7.0",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-74989",
      "url": "https://patchblox.com/security/cve/CVE-2026-74989",
      "title": "Internally found bugs fixed in Thunderbird 154",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.0057,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84142",
      "url": "https://patchblox.com/security/cve/CVE-2026-84142",
      "title": "Internally found bugs fixed in Thunderbird 155",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00561,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92036",
      "url": "https://patchblox.com/security/cve/CVE-2026-92036",
      "title": "Incorrect boundary conditions in the Networking: HTTP component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00551,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92037",
      "url": "https://patchblox.com/security/cve/CVE-2026-92037",
      "title": "Incorrect boundary conditions in the DOM: Animation component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00551,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92061",
      "url": "https://patchblox.com/security/cve/CVE-2026-92061",
      "title": "Incorrect boundary conditions in the Security: Process Sandboxing component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00551,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92066",
      "url": "https://patchblox.com/security/cve/CVE-2026-92066",
      "title": "Sandbox escape in the Profile Backup component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00551,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92051",
      "url": "https://patchblox.com/security/cve/CVE-2026-92051",
      "title": "Spoofing issue due to invalid pointer in the Graphics component",
      "priority": "Urgent",
      "cvss": 9.1,
      "epss": 0.00531,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74956",
      "url": "https://patchblox.com/security/cve/CVE-2026-74956",
      "title": "Same-origin policy bypass in the DOM: Service Workers component",
      "priority": "Urgent",
      "cvss": 9.1,
      "epss": 0.00498,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92050",
      "url": "https://patchblox.com/security/cve/CVE-2026-92050",
      "title": "Sandbox escape due to race condition in the XPConnect component",
      "priority": "Urgent",
      "cvss": 9.1,
      "epss": 0.0041,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100810",
      "url": "https://patchblox.com/security/cve/CVE-2026-100810",
      "title": "Other issue in the DevTools component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00375,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100763",
      "url": "https://patchblox.com/security/cve/CVE-2026-100763",
      "title": "Incorrect boundary conditions in the Graphics: WebGPU component",
      "priority": "Urgent",
      "cvss": 9.1,
      "epss": 0.00375,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74979",
      "url": "https://patchblox.com/security/cve/CVE-2026-74979",
      "title": "Mitigation bypass in the Add-ons Manager component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.00306,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100804",
      "url": "https://patchblox.com/security/cve/CVE-2026-100804",
      "title": "Sandbox escape due to use-after-free in the Preferences: Backend component",
      "priority": "Urgent",
      "cvss": 9.6,
      "epss": 0.00282,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92034",
      "url": "https://patchblox.com/security/cve/CVE-2026-92034",
      "title": "Site isolation issue in the Graphics component",
      "priority": "Urgent",
      "cvss": 9.1,
      "epss": 0.00274,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-75874",
      "url": "https://patchblox.com/security/cve/CVE-2026-75874",
      "title": "Sandbox escape in the Remote Settings Client component",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 10,
      "epss": 0.00455,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74958",
      "url": "https://patchblox.com/security/cve/CVE-2026-74958",
      "title": "Information disclosure in the WebRTC component",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00452,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74947",
      "url": "https://patchblox.com/security/cve/CVE-2026-74947",
      "title": "Privilege escalation due to invalid pointer in the Graphics component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00449,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74938",
      "url": "https://patchblox.com/security/cve/CVE-2026-74938",
      "title": "Mitigation bypass in the JavaScript: GC component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.1,
      "epss": 0.00442,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74954",
      "url": "https://patchblox.com/security/cve/CVE-2026-74954",
      "title": "Information disclosure due to side-channel in the Storage: Cache API component",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00439,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84128",
      "url": "https://patchblox.com/security/cve/CVE-2026-84128",
      "title": "Privilege escalation in the WebDriver BiDi component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00437,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74937",
      "url": "https://patchblox.com/security/cve/CVE-2026-74937",
      "title": "Use-after-free in the JavaScript: GC component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00436,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92040",
      "url": "https://patchblox.com/security/cve/CVE-2026-92040",
      "title": "Use-after-free in the JavaScript: WebAssembly component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00422,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74950",
      "url": "https://patchblox.com/security/cve/CVE-2026-74950",
      "title": "Privilege escalation in the Downloads API component",
      "priority": "High",
      "severity": "important",
      "cvss": 8.8,
      "epss": 0.00415,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74952",
      "url": "https://patchblox.com/security/cve/CVE-2026-74952",
      "title": "Privilege escalation in the Application Update component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00415,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74955",
      "url": "https://patchblox.com/security/cve/CVE-2026-74955",
      "title": "Privilege escalation in the Request Handling component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00415,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100781",
      "url": "https://patchblox.com/security/cve/CVE-2026-100781",
      "title": "Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.6,
      "epss": 0.00328,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100779",
      "url": "https://patchblox.com/security/cve/CVE-2026-100779",
      "title": "Use-after-free in the XSLT component",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.00326,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100780",
      "url": "https://patchblox.com/security/cve/CVE-2026-100780",
      "title": "Use-after-free in the DOM: Core \u0026 HTML component",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.00319,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74965",
      "url": "https://patchblox.com/security/cve/CVE-2026-74965",
      "title": "Privilege escalation in the Shell Integration component",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.00303,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100768",
      "url": "https://patchblox.com/security/cve/CVE-2026-100768",
      "title": "Use-after-free in the Graphics: WebGPU component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00288,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100796",
      "url": "https://patchblox.com/security/cve/CVE-2026-100796",
      "title": "Use-after-free in the JavaScript: WebAssembly component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00282,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100764",
      "url": "https://patchblox.com/security/cve/CVE-2026-100764",
      "title": "Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00231,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100813",
      "url": "https://patchblox.com/security/cve/CVE-2026-100813",
      "title": "Invalid pointer in the JavaScript Engine: JIT component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00231,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100761",
      "url": "https://patchblox.com/security/cve/CVE-2026-100761",
      "title": "Privilege escalation due to use-after-free in the Graphics: WebGPU component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00225,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100805",
      "url": "https://patchblox.com/security/cve/CVE-2026-100805",
      "title": "Race condition, use-after-free in the Audio/Video component",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00208,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74963",
      "url": "https://patchblox.com/security/cve/CVE-2026-74963",
      "title": "Same-origin policy bypass in the Networking: Cookies component",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.5,
      "epss": 0.00124,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-92063",
      "url": "https://patchblox.com/security/cve/CVE-2026-92063",
      "title": "Denial-of-service in the Audio/Video component",
      "priority": "Routine",
      "cvss": 6.5,
      "epss": 0.00384,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84138",
      "url": "https://patchblox.com/security/cve/CVE-2026-84138",
      "title": "Denial-of-service in the PDF Viewer component",
      "priority": "Routine",
      "cvss": 6.5,
      "epss": 0.00372,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84126",
      "url": "https://patchblox.com/security/cve/CVE-2026-84126",
      "title": "Incorrect boundary conditions in the Layout: Grid component",
      "priority": "Routine",
      "cvss": 4.3,
      "epss": 0.00312,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100793",
      "url": "https://patchblox.com/security/cve/CVE-2026-100793",
      "title": "JIT miscompilation in the JavaScript Engine component",
      "priority": "Routine",
      "cvss": 6.5,
      "epss": 0.00269,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100795",
      "url": "https://patchblox.com/security/cve/CVE-2026-100795",
      "title": "Denial-of-service in the Networking component",
      "priority": "Routine",
      "cvss": 6.5,
      "epss": 0.00264,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100799",
      "url": "https://patchblox.com/security/cve/CVE-2026-100799",
      "title": "Uninitialized memory in the Graphics: WebGPU component",
      "priority": "Routine",
      "cvss": 4.3,
      "epss": 0.00241,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100802",
      "url": "https://patchblox.com/security/cve/CVE-2026-100802",
      "title": "Uninitialized memory in the Graphics: WebGPU component",
      "priority": "Routine",
      "cvss": 4.3,
      "epss": 0.00241,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-100817",
      "url": "https://patchblox.com/security/cve/CVE-2026-100817",
      "title": "Other issue in the JavaScript: WebAssembly component",
      "priority": "Routine",
      "cvss": 5.4,
      "epss": 0.00197,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74968",
      "url": "https://patchblox.com/security/cve/CVE-2026-74968",
      "title": "Site isolation issue in the Graphics: WebRender component",
      "priority": "Routine",
      "severity": "important",
      "cvss": 5.4,
      "epss": 0.00158,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-11T07:45:43Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}