| CVE-2025-6430 | TRUNG BÌNH6.1 | 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 was fixed in Firefox 140, Firefox ESR 128.12, Thund | 24/06/2025 |
| CVE-2025-6429 | TRUNG BÌNH6.5 | 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 was fixed in Firefox 140, Firefox ESR 128.12, Thunderbi | 24/06/2025 |
| CVE-2025-6428 | TRUNG BÌNH4.3 | 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 was fixed in Firefox 140. | 24/06/2025 |
| CVE-2025-6427 | NGHIÊM TRỌNG9.1 | 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 was fixed in Firefox 140 and Thunderbird 140. | 24/06/2025 |
| CVE-2025-6426 | CAO8.8 | 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. | 24/06/2025 |
| CVE-2025-6425 | TRUNG BÌNH4.3 | 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, | 24/06/2025 |
| CVE-2025-6424 | NGHIÊM TRỌNG9.8 | A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12. | 24/06/2025 |
| CVE-2025-49710 | NGHIÊM TRỌNG9.8 | An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4. | 11/06/2025 |
| CVE-2025-49709 | NGHIÊM TRỌNG9.8 | Certain canvas operations could have lead to memory corruption. This vulnerability was fixed in Firefox 139.0.4. | 11/06/2025 |
| CVE-2025-5272 | CAO7.3 | 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 was fixed in Firefox 139 and Thunderbird 139. | 27/05/2025 |
| CVE-2025-5271 | TRUNG BÌNH6.5 | Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability was fixed in Firefox 139 and Thunderbird 139. | 27/05/2025 |
| CVE-2025-5270 | CAO7.5 | In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability was fixed in Firefox 139 and Thunderbird 139. | 27/05/2025 |
| CVE-2025-5269 | CAO8.1 | Memory safety bug present in Firefox ESR 128.10, and Thunderbird 128.10. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 128.11 and Thunderbird 128.11. | 27/05/2025 |
| CVE-2025-5268 | CAO8.1 | Memory safety bugs present in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10. 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 139, Firefox ESR 1 | 27/05/2025 |
| CVE-2025-5267 | TRUNG BÌNH5.4 | A clickjacking vulnerability could have been used to trick a user into leaking saved payment card details to a malicious page. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11. | 27/05/2025 |
| CVE-2025-5266 | TRUNG BÌNH4.3 | Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11. | 27/05/2025 |
| CVE-2025-5265 | TRUNG BÌNH4.8 | Due to insufficient escaping of the ampersand character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system.
*This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was | 27/05/2025 |
| CVE-2025-5264 | TRUNG BÌNH4.8 | Due to insufficient escaping of the newline character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunder | 27/05/2025 |
| CVE-2025-5263 | TRUNG BÌNH4.3 | Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11. | 27/05/2025 |
| CVE-2025-5020 | TRUNG BÌNH4.3 | Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139. | 21/05/2025 |