Mozilla Firefox Esr vulnerabilities

CVE-2019-9819 [CRITICAL] CWE-843 CVE-2019-9819: A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

CVE-2019-9820 [CRITICAL] CWE-416 CVE-2019-9820: A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

CVE-2022-45406 [CRITICAL] CWE-416 CVE-2022-45406: If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be deleted while references to it lived on in a BaseShape. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

CVE-2021-4127 [CRITICAL] CVE-2021-4127: An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be e An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited.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-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-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-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-2019-11745 [HIGH] CWE-787 CVE-2019-11745: When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a small out of bounds write could occur. This could have caused heap corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

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-2018-5129 [HIGH] CWE-787 CVE-2018-5129: A lack of parameter validation on IPC messages results in a potential out-of-bounds write through ma A lack of parameter validation on IPC messages results in a potential out-of-bounds write through malformed IPC messages. This can potentially allow for sandbox escape through memory corruption in the parent process. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.

CVE-2026-74964 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74964 Mozilla Foundation Security Advisory 2026-77 CVE: CVE-2026-74964 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 153.1

CVE-2026-16369 Mozilla Foundation Security Advisory 2026-70: CVE-2026-16369 Mozilla Foundation Security Advisory 2026-70 CVE: CVE-2026-16369 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 140.13

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-2026-84141 Mozilla Foundation Security Advisory 2026-85: CVE-2026-84141 Mozilla Foundation Security Advisory 2026-85 CVE: CVE-2026-84141 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 153.2

CVE-2026-74969 Mozilla Foundation Security Advisory 2026-75: CVE-2026-74969 Mozilla Foundation Security Advisory 2026-75 CVE: CVE-2026-74969 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 115.39

CVE-2026-74949 Mozilla Foundation Security Advisory 2026-76: CVE-2026-74949 Mozilla Foundation Security Advisory 2026-76 CVE: CVE-2026-74949 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 140.14

CVE-2026-74942 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74942 Mozilla Foundation Security Advisory 2026-77 CVE: CVE-2026-74942 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 153.1

CVE-2026-74937 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74937 Mozilla Foundation Security Advisory 2026-77 CVE: CVE-2026-74937 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 153.1