Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Filtered by product Firefox
Total 2796 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2025-6435 1 Mozilla 1 Firefox 2025-07-14 N/A 8.1 HIGH
If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability affects Firefox < 140 and Thunderbird < 140.
CVE-2025-6434 1 Mozilla 1 Firefox 2025-07-14 N/A 4.3 MEDIUM
The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability affects Firefox < 140 and Thunderbird < 140.
CVE-2025-6433 1 Mozilla 1 Firefox 2025-07-14 N/A 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 2025-07-14 N/A 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-2025-6427 1 Mozilla 1 Firefox 2025-07-14 N/A 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-2025-6426 2 Apple, Mozilla 2 Macos, Firefox 2025-07-14 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 affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12.
CVE-2025-6428 2 Google, Mozilla 2 Android, Firefox 2025-07-03 N/A 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-2025-6431 2 Google, Mozilla 2 Android, Firefox 2025-07-03 N/A 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-2009-2466 1 Mozilla 2 Firefox, Thunderbird 2025-06-25 10.0 HIGH N/A
The JavaScript engine in Mozilla Firefox before 3.0.12 and Thunderbird allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) nsDOMClassInfo.cpp, (2) JS_HashTableRawLookup, and (3) MirrorWrappedNativeParent and js_LockGCThingRT.
CVE-2024-11705 1 Mozilla 2 Firefox, Thunderbird 2025-06-24 N/A 9.1 CRITICAL
`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL. When it was passed as NULL, a segmentation fault (SEGV) occurred, leading to crashes. This behavior conflicted with the PKCS#11 v3.0 specification, which allows `phKey` to be NULL for certain mechanisms. This vulnerability affects Firefox < 133 and Thunderbird < 133.
CVE-2024-11698 2 Apple, Mozilla 3 Macos, Firefox, Thunderbird 2025-06-24 N/A 9.8 CRITICAL
A flaw in handling fullscreen transitions may have inadvertently caused the application to become stuck in fullscreen mode when a modal dialog was opened during the transition. This issue left users unable to exit fullscreen mode using standard actions like pressing "Esc" or accessing right-click menus, resulting in a disrupted browsing experience until the browser is restarted. *This bug only affects the application when running on macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.
CVE-2024-11691 2 Apple, Mozilla 17 M1, M1 Max, M1 Pro and 14 more 2025-06-24 N/A 8.8 HIGH
Certain WebGL operations on Apple silicon M series devices could have lead to an out-of-bounds write and memory corruption due to a flaw in Apple's GPU driver. *This bug only affected the application on Apple M series hardware. Other platforms were unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.
CVE-2024-0752 1 Mozilla 1 Firefox 2025-06-20 N/A 6.5 MEDIUM
A use-after-free crash could have occurred on macOS if a Firefox update were being applied on a very busy system. This could have resulted in an exploitable crash. This vulnerability affects Firefox < 122.
CVE-2024-0751 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-20 N/A 8.8 HIGH
A malicious devtools extension could have been used to escalate privileges. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0750 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-20 N/A 8.8 HIGH
A bug in popup notifications delay calculation could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0746 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-20 N/A 6.5 MEDIUM
A Linux user opening the print preview dialog could have caused the browser to crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2025-49709 1 Mozilla 1 Firefox 2025-06-16 N/A 9.8 CRITICAL
Certain canvas operations could have lead to memory corruption. This vulnerability affects Firefox < 139.0.4.
CVE-2025-49710 1 Mozilla 1 Firefox 2025-06-16 N/A 9.8 CRITICAL
An integer overflow was present in `OrderedHashTable` used by the JavaScript engine This vulnerability affects Firefox < 139.0.4.
CVE-2025-5020 1 Mozilla 1 Firefox 2025-06-13 N/A 4.3 MEDIUM
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 affects Firefox for iOS < 139.
CVE-2023-5758 1 Mozilla 1 Firefox 2025-06-12 N/A 6.1 MEDIUM
When opening a page in reader mode, the redirect URL could have caused attacker-controlled script to execute in a reflected Cross-Site Scripting (XSS) attack. This vulnerability affects Firefox for iOS < 119.