Mozilla Firefox vulnerabilities

CVE-2021-29989 [HIGH] CWE-787 CVE-2021-29989: Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. Some of Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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 Thunderbird < 78.13, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29976 [HIGH] CWE-787 CVE-2021-29976: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbir Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

CVE-2021-38493 [HIGH] CWE-787 CVE-2021-38493: Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. 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 ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.

CVE-2017-5469 [CRITICAL] CVE-2017-5469: Fixed potential buffer overflows in generated Firefox code due to CVE-2016-6354 issue in Flex. This Fixed potential buffer overflows in generated Firefox code due to CVE-2016-6354 issue in Flex. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVE-2023-6863 [HIGH] CVE-2023-6863: The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

CVE-2010-2765 [CRITICAL] CWE-189 CVE-2010-2765: Integer overflow in the FRAMESET element implementation in Mozilla Firefox before 3.5.12 and 3.6.x b Integer overflow in the FRAMESET element implementation in Mozilla Firefox before 3.5.12 and 3.6.x before 3.6.9, Thunderbird before 3.0.7 and 3.1.x before 3.1.3, and SeaMonkey before 2.0.7 might allow remote attackers to execute arbitrary code via a large number of values in the cols (aka columns) attribute, leading to a heap-based buffer overflow.

CVE-2025-8037 [CRITICAL] CWE-614 CVE-2025-8037: Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the namel Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.

CVE-2022-46874 [HIGH] CWE-94 CVE-2022-46874: A file with a long filename could have had its filename truncated to remove the valid extension, lea A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code.*Note*: This issue was originally included in the advisories for Thunderbird 102.6, but a patch (specific to Thunderbird) was omitte

CVE-2022-22751 [HIGH] CWE-787 CVE-2022-22751: Mozilla developers Calixte Denizet, Kershaw Chang, Christian Holler, Jason Kratzer, Gabriele Svelto, Mozilla developers Calixte Denizet, Kershaw Chang, Christian Holler, Jason Kratzer, Gabriele Svelto, Tyson Smith, Simon Giesecke, and Steve Fink reported memory safety bugs present in Firefox 95 and Firefox ESR 91.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited t

CVE-2021-29973 [HIGH] CVE-2021-29973: Password autofill was enabled without user interaction on insecure websites on Firefox for Android. Password autofill was enabled without user interaction on insecure websites on Firefox for Android. This was corrected to require user interaction with the page before a user's password would be entered by the browser's autofill functionality *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefo

CVE-2009-0733 [CRITICAL] CWE-787 CVE-2009-0733: Multiple stack-based buffer overflows in the ReadSetOfCurves function in LittleCMS (aka lcms or libl Multiple stack-based buffer overflows in the ReadSetOfCurves function in LittleCMS (aka lcms or liblcms) before 1.18beta2, as used in Firefox 3.1beta, OpenJDK, and GIMP, allow context-dependent attackers to execute arbitrary code via a crafted image file associated with a large integer value for the (1) input or (2) output channel, related to the Re

CVE-2023-4585 [HIGH] CWE-787 CVE-2023-4585: Memory safety bugs present in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1. Some of these b Memory safety bugs present in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1. 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 < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

CVE-2023-32215 [HIGH] CWE-787 CVE-2023-32215: Mozilla developers and community members Gabriele Svelto, Andrew Osmond, Emily McDonough, Sebastian Mozilla developers and community members Gabriele Svelto, Andrew Osmond, Emily McDonough, Sebastian Hengst, Andrew McCreight and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 112 and Firefox ESR 102.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been

CVE-2023-28176 [HIGH] CWE-787 CVE-2023-28176: Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. Some of these bugs showed evidence Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. 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 < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.

CVE-2023-25737 [HIGH] CWE-704 CVE-2023-25737: An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undef An invalid downcast from nsTextNode to SVGElement could have lead to undefined behavior. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

CVE-2023-23605 [HIGH] CWE-787 CVE-2023-23605: Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 a Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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 < 109, Firefox ESR < 102.7, and Thunde

CVE-2023-29550 [HIGH] CVE-2023-29550: Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs showed evidence Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. 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 < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.1

CVE-2023-28162 [HIGH] CWE-704 CVE-2023-28162: While implementing AudioWorklets, some code may have casted one type to another, invalid, dynamic ty While implementing AudioWorklets, some code may have casted one type to another, invalid, dynamic type. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.

CVE-2023-29536 [HIGH] CWE-416 CVE-2023-29536: An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-con An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

CVE-2023-25739 [HIGH] CWE-416 CVE-2023-25739: Module load requests that failed were not being checked as to whether or not they were cancelled cau Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.