Mozilla Thunderbird (rm) 141.0
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.
Superseded. The latest Mozilla Thunderbird (rm) is 159.0, which also fixes every CVE on this page. Install that instead.
Priority of the 53 CVEs
Applies to
| Product | Version |
|---|---|
| Mozilla Thunderbird (rm) | 141.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2025-8044 | Memory safety bugs fixed in Firefox 141 and Thunderbird 141 | 9.8 | 0.0048 | None reported |
| Urgent | CVE-2025-8043 | Incorrect URL truncation | 9.8 | 0.0043 | None reported |
| Urgent | CVE-2026-16361 | Memory safety bugs fixed in Thunderbird ESR 140.13 | 9.8 | 0.0032 | None reported |
| High | CVE-2026-6770 | Other issue in the Storage: IndexedDB component | 8.8 | 0.0388 | None reported |
| High | CVE-2026-6746 | Use-after-free in the DOM: Core & HTML component | 8.8 | 0.0095 | None reported |
| High | CVE-2025-8028 | Large branch table could lead to truncated instruction | 9.8 | 0.0058 | None reported |
| High | CVE-2026-8946 | Incorrect boundary conditions in the Audio/Video: Web Codecs component | 7.5 | 0.0056 | None reported |
| High | CVE-2026-8953 | Sandbox escape due to use-after-free in the Disability Access APIs component | 9.6 | 0.0053 | None reported |
| High | CVE-2026-6785 | Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150 | 8.8 | 0.0051 | None reported |
| High | CVE-2025-8031 | Incorrect URL stripping in CSP reports | 9.8 | 0.0051 | None reported |
| High | CVE-2026-6786 | Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150 | 8.8 | 0.0050 | None reported |
| High | CVE-2026-6757 | Invalid pointer in the JavaScript: WebAssembly component | 8.8 | 0.0049 | None reported |
| High | CVE-2026-6750 | Privilege escalation in the Graphics: WebRender component | 8.8 | 0.0048 | None reported |
| High | CVE-2026-8091 | Incorrect boundary conditions in the Audio/Video: Playback component | 9.8 | 0.0047 | None reported |
| High | CVE-2026-14899 | Off-by-one out of bounds read in MIME header parser for forwarding | 8.8 | 0.0047 | None reported |
| High | CVE-2025-8034 | 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 | 8.8 | 0.0046 | None reported |
| High | CVE-2026-8094 | Other issue in the WebRTC component | 9.8 | 0.0045 | None reported |
| High | CVE-2025-8036 | DNS rebinding circumvents CORS | 8.1 | 0.0045 | None reported |
| High | CVE-2025-8027 | JavaScript engine only wrote partial return value to stack | 7.5 | 0.0043 | None reported |
| High | CVE-2025-8033 | Incorrect JavaScript state machine for generators | 7.5 | 0.0043 | None reported |
| High | CVE-2026-8954 | Incorrect boundary conditions, integer overflow in the Audio/Video component | 7.5 | 0.0043 | None reported |
| High | CVE-2026-8947 | Use-after-free in the DOM: Bindings (WebIDL) component | 7.5 | 0.0041 | None reported |
| High | CVE-2026-6749 | Information disclosure due to uninitialized memory in the Graphics: Canvas2D component | 8.8 | 0.0040 | None reported |
| High | CVE-2025-8035 | 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 | 8.8 | 0.0040 | None reported |
| High | CVE-2026-6747 | Use-after-free in the WebRTC component | 8.8 | 0.0040 | None reported |
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