Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Total 3978 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2025-11713 1 Mozilla 2 Firefox, Thunderbird 2026-10-23 N/A 8.1 HIGH
Insufficient escaping in the “Copy as cURL” feature could have been used to trick a user into executing unexpected code on Windows. This did not affect the application when running on other operating systems. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.
CVE-2023-25738 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-10-23 N/A 6.5 MEDIUM
Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and could have resulted in invalid values which in turn would cause the browser to attempt out of bounds access to related variables.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-0547 1 Mozilla 1 Thunderbird 2026-10-23 N/A 6.5 MEDIUM
OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be accepted. Thunderbird versions from 68 to 102.9.1 were affected by this bug. This vulnerability affects Thunderbird < 102.10.
CVE-2023-32207 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-10-23 N/A 8.8 HIGH
A missing delay in popup notifications could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-28163 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-10-23 N/A 6.5 MEDIUM
When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. <br>*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2025-11715 1 Mozilla 2 Firefox, Thunderbird 2026-10-23 N/A 8.8 HIGH
Memory safety bugs present in 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 140.4, Thunderbird 144, and Thunderbird 140.4.
CVE-2023-32214 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-10-23 N/A 7.5 HIGH
Protocol handlers `ms-cxh` and `ms-cxh-full` could have been leveraged to trigger a denial of service. *Note: This attack only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-25746 1 Mozilla 2 Firefox Esr, Thunderbird 2026-10-23 N/A 8.8 HIGH
Memory safety bugs present in Firefox ESR 102.7. 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 affects Thunderbird < 102.8 and Firefox ESR < 102.8.
CVE-2023-37207 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2026-10-23 N/A 6.5 MEDIUM
A website could have obscured the fullscreen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 115, Firefox ESR < 102.13, and Thunderbird < 102.13.
CVE-2023-29539 1 Mozilla 5 Firefox, Firefox Esr, Firefox Mobile and 2 more 2026-10-23 N/A 8.8 HIGH
When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
CVE-2023-25744 1 Mozilla 2 Firefox, Firefox Esr 2026-10-23 N/A 8.8 HIGH
Mmemory safety bugs present in Firefox 109 and Firefox ESR 102.7. 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 affects Firefox < 110 and Firefox ESR < 102.8.
CVE-2023-25751 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-10-23 N/A 6.5 MEDIUM
Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-4050 2 Debian, Mozilla 2 Debian Linux, Firefox 2026-10-23 N/A 7.5 HIGH
In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This resulted in a potentially exploitable crash which could have led to a sandbox escape. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
CVE-2023-3600 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-10-23 N/A 8.8 HIGH
During the worker lifecycle, a use-after-free condition could have occurred, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.
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.