Filtered by vendor Mozilla
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Filtered by product Firefox
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Total
2919 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2025-6433 | 1 Mozilla | 1 Firefox | 2025-10-30 | 9.8 Critical |
| If a user visited a webpage with an invalid TLS certificate, and granted an exception, the webpage was able to provide a WebAuthn challenge that the user would be prompted to complete. This is in violation of the WebAuthN spec which requires "a secure transport established without errors". This vulnerability affects Firefox < 140 and Thunderbird < 140. | ||||
| CVE-2025-6432 | 1 Mozilla | 1 Firefox | 2025-10-30 | 8.6 High |
| When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability affects Firefox < 140 and Thunderbird < 140. | ||||
| CVE-2025-6431 | 2 Google, Mozilla | 2 Android, Firefox | 2025-10-30 | 6.5 Medium |
| When a link can be opened in an external application, Firefox for Android will, by default, prompt the user before doing so. An attacker could have bypassed this prompt, potentially exposing the user to security vulnerabilities or privacy leaks in external applications. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 140. | ||||
| CVE-2025-6428 | 2 Google, Mozilla | 2 Android, Firefox | 2025-10-30 | 4.3 Medium |
| When a URL was provided in a link querystring parameter, Firefox for Android would follow that URL instead of the correct URL, potentially leading to phishing attacks. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 140. | ||||
| CVE-2025-6427 | 1 Mozilla | 1 Firefox | 2025-10-30 | 9.1 Critical |
| An attacker was able to bypass the `connect-src` directive of a Content Security Policy by manipulating subdocuments. This would have also hidden the connections from the Network tab in Devtools. This vulnerability affects Firefox < 140 and Thunderbird < 140. | ||||
| CVE-2025-8044 | 1 Mozilla | 2 Firefox, Thunderbird | 2025-10-30 | 9.8 Critical |
| Memory safety bugs present in Firefox 140 and Thunderbird 140. 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 < 141 and Thunderbird < 141. | ||||
| CVE-2025-5272 | 1 Mozilla | 2 Firefox, Thunderbird | 2025-10-30 | 7.3 High |
| Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 < 139 and Thunderbird < 139. | ||||
| CVE-2025-5271 | 1 Mozilla | 1 Firefox | 2025-10-30 | 6.5 Medium |
| Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability affects Firefox < 139 and Thunderbird < 139. | ||||
| CVE-2025-5270 | 1 Mozilla | 1 Firefox | 2025-10-30 | 7.5 High |
| In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139 and Thunderbird < 139. | ||||
| CVE-2025-6430 | 2 Mozilla, Redhat | 8 Firefox, Firefox Esr, Enterprise Linux and 5 more | 2025-10-30 | 6.1 Medium |
| When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `<embed>` or `<object>` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12. | ||||
| CVE-2025-6429 | 2 Mozilla, Redhat | 8 Firefox, Firefox Esr, Enterprise Linux and 5 more | 2025-10-30 | 6.5 Medium |
| Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an `embed` tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12. | ||||
| CVE-2025-6426 | 2 Apple, Mozilla | 3 Macos, Firefox, Firefox Esr | 2025-10-30 | 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 affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12. | ||||
| CVE-2025-11153 | 1 Mozilla | 1 Firefox | 2025-10-30 | 7.5 High |
| JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 143.0.3. | ||||
| CVE-2025-9187 | 1 Mozilla | 2 Firefox, Thunderbird | 2025-10-30 | 9.8 Critical |
| Memory safety bugs present in Firefox 141 and Thunderbird 141. 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 < 142 and Thunderbird < 142. | ||||
| CVE-2025-9186 | 2 Google, Mozilla | 2 Android, Firefox | 2025-10-30 | 6.5 Medium |
| Spoofing issue in the Address Bar component of Firefox Focus for Android. This vulnerability affects Firefox < 142. | ||||
| CVE-2025-11713 | 2 Microsoft, Mozilla | 4 Windows, Firefox, Firefox Esr and 1 more | 2025-10-30 | 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 Firefox running on other operating systems. This vulnerability affects Firefox < 144, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4. | ||||
| CVE-2025-55031 | 2 Apple, Mozilla | 5 Ios, Firefox, Firefox Focus and 2 more | 2025-10-30 | 9.8 Critical |
| Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An attacker within Bluetooth range could have used this to trick the user into using their passkey to log the attacker's computer into the target account. This vulnerability affects Firefox for iOS < 142 and Focus for iOS < 142. | ||||
| CVE-2025-9184 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-10-30 | 8.1 High |
| Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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 < 142, Firefox ESR < 140.2, Thunderbird < 142, and Thunderbird < 140.2. | ||||
| CVE-2025-9183 | 1 Mozilla | 2 Firefox, Firefox Esr | 2025-10-30 | 6.5 Medium |
| Spoofing issue in the Address Bar component. This vulnerability affects Firefox < 142 and Firefox ESR < 140.2. | ||||
| CVE-2025-9182 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-10-30 | 7.5 High |
| Denial-of-service due to out-of-memory in the Graphics: WebRender component. This vulnerability affects Firefox < 142, Firefox ESR < 140.2, Thunderbird < 142, and Thunderbird < 140.2. | ||||