Mozilla Firefox Esr vulnerabilities

CVE-2021-4127 [CRITICAL] CVE-2021-4127: An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be e An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird < 78.9 and Firefox ESR < 78.9.

CVE-2022-31747 [CRITICAL] CWE-125 CVE-2022-31747: Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memor Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 100 and Firefox ESR 91.9. 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 Thund

CVE-2023-4057 [CRITICAL] CWE-787 CVE-2023-4057: Memory safety bugs present in Firefox 115, Firefox ESR 115.0, and Thunderbird 115.0. Some of these b Memory safety bugs present in Firefox 115, Firefox ESR 115.0, and Thunderbird 115.0. 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 < 116, Firefox ESR < 115.1, and Thunderbird < 115.1.

CVE-2017-7845 [HIGH] CWE-119 CVE-2017-7845: A buffer overflow occurs when drawing and validating elements using Direct 3D 9 with the ANGLE graph A buffer overflow occurs when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library, used for WebGL content. This is due to an incorrect value being passed within the library during checks and results in a potentially exploitable crash. Note: This attack only affects Windows operating systems. Other operating systems are unaf

CVE-2022-26384 [CRITICAL] CWE-693 CVE-2022-26384: If an attacker could control the contents of an iframe sandboxed with <code>allow-popups</code> but If an attacker could control the contents of an iframe sandboxed with allow-popups but not allow-scripts, they were able to craft a link that, when clicked, would lead to JavaScript execution in violation of the sandbox. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.

CVE-2024-7519 [CRITICAL] CWE-787 CVE-2024-7519: Insufficient checks when processing graphics shared memory could have led to memory corruption. This Insufficient checks when processing graphics shared memory could have led to memory corruption. This could be leveraged by an attacker to perform a sandbox escape. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

CVE-2020-15659 [HIGH] CWE-787 CVE-2020-15659: Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firef Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 < 79, Firefox ESR < 68.11, Firefox ESR < 78.1,

CVE-2026-12295 Mozilla Foundation Security Advisory 2026-59: CVE-2026-12295 Mozilla Foundation Security Advisory 2026-59 CVE: CVE-2026-12295 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 115.37

CVE-2026-12294 Mozilla Foundation Security Advisory 2026-59: CVE-2026-12294 Mozilla Foundation Security Advisory 2026-59 CVE: CVE-2026-12294 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 115.37

CVE-2026-7321 Mozilla Foundation Security Advisory 2026-36: CVE-2026-7321 Mozilla Foundation Security Advisory 2026-36 CVE: CVE-2026-7321 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 140.10.1

CVE-2026-16396 Mozilla Foundation Security Advisory 2026-70: CVE-2026-16396 Mozilla Foundation Security Advisory 2026-70 CVE: CVE-2026-16396 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 140.13

CVE-2020-15673 [HIGH] CWE-416 CVE-2020-15673: Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of t Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

CVE-2021-23994 [HIGH] CWE-909 CVE-2021-23994: A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of b A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2020-26960 [HIGH] CWE-416 CVE-2020-26960: If the Compact() method was called on an nsTArray, the array could have been reallocated without upd If the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

CVE-2020-26973 [HIGH] CVE-2020-26973: Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. Thi Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

CVE-2020-6799 [HIGH] CWE-88 CVE-2020-6799: Command line arguments could have been injected during Firefox invocation as a shell handler for cer Command line arguments could have been injected during Firefox invocation as a shell handler for certain unsupported file types. This required Firefox to be configured as the default handler for a given file type and for a file downloaded to be opened in a third party application that insufficiently sanitized URL data. In that situation, clicking a link

CVE-2021-23987 [HIGH] CWE-787 CVE-2021-23987: Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firef Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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 ESR < 78.9, Firefox < 87, and Thunderbird < 78.

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.