Mozilla Firefox vulnerabilities

CVE-2025-13027 [HIGH] CWE-119 CVE-2025-13027: Memory safety bugs present in Firefox 144 and Thunderbird 144. Some of these bugs showed evidence of Memory safety bugs present in Firefox 144 and Thunderbird 144. 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 145 and Thunderbird 145.

CVE-2025-13013 [MEDIUM] CWE-288 CVE-2025-13013: Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 145, Fi Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

CVE-2025-13015 [LOW] CWE-290 CVE-2025-13015: Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firef Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30.

CVE-2025-12380 [CRITICAL] CWE-416 CVE-2025-12380: Starting with Firefox 142, it was possible for a compromised child process to trigger a use-after-fr Starting with Firefox 142, it was possible for a compromised child process to trigger a use-after-free in the GPU or browser process using WebGPU-related IPC calls. This may have been usable to escape the child process sandbox. This vulnerability was fixed in Firefox 144.0.2.

CVE-2025-11710 [CRITICAL] CWE-200 CVE-2025-11710: A compromised web process using malicious IPC messages could have caused the privileged browser proc 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-2025-11708 [CRITICAL] CWE-416 CVE-2025-11708: Use-after-free in MediaTrackGraphImpl::GetInstance(). This vulnerability was fixed in Firefox 144, F Use-after-free in MediaTrackGraphImpl::GetInstance(). This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

CVE-2025-11709 [CRITICAL] CWE-787 CVE-2025-11709: A compromised web process was able to trigger out of bounds reads and writes in a more privileged pr 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-2025-11721 [CRITICAL] CWE-119 CVE-2025-11721: Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory cor Memory safety bug present in Firefox 143 and Thunderbird 143. 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 144 and Thunderbird 144.

CVE-2025-11719 [CRITICAL] CWE-416 CVE-2025-11719: Starting in Thunderbird 143, the use of the native messaging API by web extensions on Windows could Starting in Thunderbird 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption. This vulnerability was fixed in Firefox 144 and Thunderbird 144.

CVE-2025-11717 [CRITICAL] CWE-200 CVE-2025-11717: When switching between Android apps using the card carousel Firefox shows a black screen as its card When switching between Android apps using the card carousel Firefox shows a black screen as its card image when a password-related screen was the last one being used. Prior to Firefox 144 the password edit screen was visible. This vulnerability was fixed in Firefox 144.

CVE-2025-11713 [HIGH] CWE-116 CVE-2025-11713: Insufficient escaping in the “Copy as cURL” feature could have been used to trick a user into execut 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-2025-11714 [HIGH] CWE-119 CVE-2025-11714: Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 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, Firefo

CVE-2025-11715 [HIGH] CWE-119 CVE-2025-11715: Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 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 Thunde

CVE-2025-11720 [HIGH] CWE-451 CVE-2025-11720: The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname. User supplied content hosted on a subdomain of a site could have been used to fool a user into thinking it was content from a different subdomain of that site. This vulnerability was fixed in Firefox 144.

CVE-2025-11712 [MEDIUM] CWE-116 CVE-2025-11712: A malicious page could have used the type attribute of an OBJECT tag to override the default browser A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This could have contributed to an XSS on a site that unsafely serves files without a content-type header. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunder

CVE-2025-11711 [MEDIUM] CWE-591 CVE-2025-11711: There was a way to change the value of JavaScript Object properties that were supposed to be non-wri 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-2025-11718 [MEDIUM] CWE-451 CVE-2025-11718: When the address bar was hidden due to scrolling on Android, a malicious page could create a fake ad When the address bar was hidden due to scrolling on Android, a malicious page could create a fake address bar to fool the user in response to a visibilitychange event. This vulnerability was fixed in Firefox 144.

CVE-2025-11716 [MEDIUM] CWE-284 CVE-2025-11716: Links in a sandboxed iframe could open an external app on Android without the required "allow-" perm Links in a sandboxed iframe could open an external app on Android without the required "allow-" permission. This vulnerability was fixed in Firefox 144 and Thunderbird 144.

CVE-2025-11152 [HIGH] CWE-190 CVE-2025-11152: Sandbox escape due to integer overflow in the Graphics: Canvas2D component. This vulnerability was f Sandbox escape due to integer overflow in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143.0.3.

CVE-2025-11153 [HIGH] CWE-94 CVE-2025-11153: JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 143.0.3.