Total
3487 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2026-5735 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 9.8 CRITICAL |
| Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2. | |||||
| CVE-2023-32213 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-10-23 | N/A | 8.8 HIGH |
| When reading a file, an uninitialized value could have been used as read limit. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11. | |||||
| CVE-2025-10532 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 6.5 MEDIUM |
| Incorrect boundary conditions in the JavaScript: GC component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3. | |||||
| CVE-2023-4049 | 2 Debian, Mozilla | 2 Debian Linux, Firefox | 2026-10-23 | N/A | 5.9 MEDIUM |
| Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1. | |||||
| CVE-2023-4052 | 1 Mozilla | 2 Firefox, Firefox Esr | 2026-10-23 | N/A | 6.5 MEDIUM |
| The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 116, Firefox ESR < 115.1, and Thunderbird < 115.1. | |||||
| CVE-2023-23598 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-10-23 | N/A | 6.5 MEDIUM |
| Due to the Firefox GTK wrapper code's use of text/plain for drag data and GTK treating all text/plain MIMEs containing file URLs as being dragged a website could arbitrarily read a file via a call to `DataTransfer.setData`. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7. | |||||
| CVE-2026-5734 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 9.8 CRITICAL |
| Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1. | |||||
| CVE-2023-28162 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-10-23 | N/A | 8.8 HIGH |
| While implementing AudioWorklets, some code may have casted one type to another, invalid, dynamic type. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9. | |||||
| CVE-2025-6426 | 2 Apple, Mozilla | 2 Macos, Firefox | 2026-10-23 | N/A | 8.8 HIGH |
| The executable file warning did not warn users before opening files with the `terminal` extension. *This bug only affects Firefox for macOS. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12. | |||||
| CVE-2025-11710 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 9.8 CRITICAL |
| A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks of its memory to the compromised process. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4. | |||||
| CVE-2025-11711 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 6.5 MEDIUM |
| There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4. | |||||
| CVE-2025-10527 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 7.1 HIGH |
| Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3. | |||||
| CVE-2025-11714 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 8.8 HIGH |
| Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4. | |||||
| CVE-2025-49710 | 1 Mozilla | 1 Firefox | 2026-10-23 | N/A | 9.8 CRITICAL |
| An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4. | |||||
| CVE-2025-13015 | 1 Mozilla | 1 Firefox | 2026-10-23 | N/A | 3.4 LOW |
| Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30. | |||||
| CVE-2025-13020 | 1 Mozilla | 1 Firefox | 2026-10-23 | N/A | 8.8 HIGH |
| Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5. | |||||
| CVE-2025-11709 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 9.8 CRITICAL |
| A compromised web process was able to trigger out of bounds reads and writes in a more privileged process using manipulated WebGL textures. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4. | |||||
| CVE-2025-6425 | 1 Mozilla | 1 Firefox | 2026-10-23 | N/A | 4.3 MEDIUM |
| An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12. | |||||
| CVE-2025-13017 | 1 Mozilla | 1 Firefox | 2026-10-23 | N/A | 8.1 HIGH |
| Same-origin policy bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5. | |||||
| CVE-2025-10528 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-10-23 | N/A | 7.3 HIGH |
| Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3. | |||||