Уязвимость компонента AudioIPC браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR, позволяющая нарушителю выполнить произвольный код

Уязвимость компонента RegExp браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR, позволяющая нарушителю выполнить произвольный код

Уязвимость компонента xslt/txNodeSorter браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR, позволяющая нарушителю оказать влияние на конфиденциальность, целостность и доступность защищаемой информации

Уязвимость браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR, связанная с ошибками представления информации пользовательским интерфейсом, позволяющая нарушителю оказать влияние на целостность защищаемой информации

Уязвимость компонента WebTransport браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR связанная с выходом операции за границы буфера в памяти, позволяющая нарушителю вызвать выполнить произвольный код

Уязвимость компонента RegExp браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR, позволяющая нарушителю оказать влияние на конфиденциальность, целостность защищаемой информации

Уязвимость браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, Thunderbird ESR, связанная с чтением за границами буфера в памяти, позволяющая нарушителю выполнить произвольный код

Уязвимость JIT-компилятора браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю выполнить произвольный код

Уязвимость механизма межпроцессорного взаимодействия (IPC) браузера Mozilla Firefox, позволяющая нарушителю обойти существующие ограничения безопасности и выполнить произвольный код

In resizeToAtLeast of SkRegion.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-after-free in the Browser process. This could have led to a sandbox escape. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

An inconsistent comparator in xslt/txNodeSorter could have resulted in potentially exploitable out-of-bounds access. Only affected version 122 and later. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

jar: URLs retrieve local file content packaged in a ZIP archive. The null and everything after it was ignored when retrieving the content from the archive, but the fake extension after the null was used to determine the type of content. This could have been used to hide code in a web extension disguised as something else like an image. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. 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 < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7. 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 < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1.