TH
Product
Thunderbird
On CISA KEVExploited in the wildRansomware-linked
2,073
CVEs
14
On KEV
10.0
Max CVSS
77
New 30D
Severity mix
Critical 379High 120Medium 1Low 0
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Add Thunderbird to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2026-100797 | 8.8 | Sep 29 | Privilege escalation due to use-after-free in the Graphics: WebRender component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100796 | 8.8 | Sep 29 | Use-after-free in the JavaScript: WebAssembly component Affected: before 157.0 |
| CVE-2026-100791 | 8.8 | Sep 29 | Use-after-free in the DOM: Core & HTML component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100790 | 8.8 | Sep 29 | Use-after-free in the XSLT component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100789 | 8.8 | Sep 29 | Use-after-free in the Graphics: Canvas2D component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100785 | 8.8 | Sep 29 | Use-after-free in the DOM: Core & HTML component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100784 | 8.8 | Sep 29 | Use-after-free in the Layout: Text and Fonts component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100782 | 8.8 | Sep 29 | Privilege escalation due to incorrect boundary conditions in the Graphics component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100780 | 8.8 | Sep 29 | Use-after-free in the DOM: Core & HTML component Affected: before 157.0; 140.0 before 140.17.0; 153.0 before 153.4.0 |
| CVE-2026-100779 | 8.8 | Sep 29 | Use-after-free in the XSLT component Affected: before 157.0; 140.0 before 140.17.0; 153.0 before 153.4.0 |
| CVE-2026-100777 | 8.8 | Sep 29 | Use-after-free in the Graphics: Canvas2D component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100776 | 8.8 | Sep 29 | Use-after-free in the JavaScript: WebAssembly component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100774 | 8.8 | Sep 29 | Use-after-free in the DOM: Core & HTML component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100773 | 8.8 | Sep 29 | Use-after-free in the Storage: IndexedDB component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100772 | 8.8 | Sep 29 | Use-after-free in the DOM: Core & HTML component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100769 | 8.8 | Sep 29 | Use-after-free in the JavaScript: WebAssembly component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100768 | 8.8 | Sep 29 | Use-after-free in the Graphics: WebGPU component Affected: before 157.0 |
| CVE-2026-100767 | 8.8 | Sep 29 | Use-after-free in the Networking: Cache component Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100765 | 8.8 | Sep 29 | Use-after-free in the JavaScript: WebAssembly component Affected: before 153.4.0; 154.0 before 157.0 |
| CVE-2026-100764 | 8.8 | Sep 29 | Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component Affected: before 157.0 |
| CVE-2026-100761 | 8.8 | Sep 29 | Privilege escalation due to use-after-free in the Graphics: WebGPU component Affected: before 157.0 |
| CVE-2026-100757 | 8.8 | Sep 29 | Use-after-free in the Widget component Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0 |
| CVE-2026-92076 | 8.8 | Sep 15 | Incorrect boundary conditions in the Networking component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92074 | 8.8 | Sep 15 | Mitigation bypass in the Popup Blocker component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92073 | 8.8 | Sep 15 | Privilege escalation in the Enterprise Policies component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92067 | 8.8 | Sep 15 | Use-after-free in the Widget: Gtk component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92065 | 8.8 | Sep 15 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92064 | 8.8 | Sep 15 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92062 | 8.8 | Sep 15 | Privilege escalation in the Session Restore component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92060 | 8.8 | Sep 15 | Use-after-free in the Internationalization component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92058 | 8.8 | Sep 15 | Use-after-free in the Graphics component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92056 | 8.8 | Sep 15 | Use-after-free in the Graphics: Text component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92055 | 8.8 | Sep 15 | Privilege escalation in the DevTools component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92054 | 8.8 | Sep 15 | Privilege escalation in the Memory component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92053 | 8.8 | Sep 15 | Privilege escalation in the Graphics: CanvasWebGL component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92052 | 8.8 | Sep 15 | Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92049 | 8.8 | Sep 15 | Use-after-free in the Widget: Win32 component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92047 | 8.8 | Sep 15 | Privilege escalation in the Crash Reporting component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92046 | 8.8 | Sep 15 | Use-after-free in the Graphics component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92043 | 8.8 | Sep 15 | Privilege escalation due to incorrect boundary conditions in the Audio/Video component Affected: before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92040 | 8.8 | Sep 15 | Use-after-free in the JavaScript: WebAssembly component Affected: before 156.0 |
| CVE-2026-92029 | 8.8 | Sep 15 | Use-after-free in the SVG component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92028 | 8.8 | Sep 15 | Use-after-free in the DOM: Core & HTML component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92027 | 8.8 | Sep 15 | Use-after-free in the DOM: Streams component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92026 | 8.8 | Sep 15 | Use-after-free in the Networking component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92025 | 8.8 | Sep 15 | Use-after-free in the DOM: Navigation component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92024 | 8.8 | Sep 15 | Use-after-free in the SVG component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92023 | 8.8 | Sep 15 | Use-after-free in the XML component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92022 | 8.8 | Sep 15 | Use-after-free in the DOM: HTML Parser component Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0 |
| CVE-2026-92021 | 8.8 | Sep 15 | Use-after-free in the JavaScript Engine: JIT component Affected: before 140.16.0 |
The 500 most important CVEs for this product (exploited first, then by severity)
