Mozilla Firefox Esr vulnerabilities

CVE-2018-5154 [CRITICAL] CWE-416 CVE-2018-5154: A use-after-free vulnerability can occur while enumerating attributes during SVG animations with cli A use-after-free vulnerability can occur while enumerating attributes during SVG animations with clip paths. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.

CVE-2017-7843 [HIGH] CWE-200 CVE-2017-7843: When Private Browsing mode is used, it is possible for a web worker to write persistent data to Inde When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting. This vulnerability affects Firefox E

CVE-2017-5376 [CRITICAL] CWE-416 CVE-2017-5376: Use-after-free while manipulating XSL in XSLT documents. This vulnerability affects Thunderbird < 45 Use-after-free while manipulating XSL in XSLT documents. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

CVE-2018-5150 [CRITICAL] CWE-119 CVE-2018-5150: Memory safety bugs were reported in Firefox 59, Firefox ESR 52.7, and Thunderbird 52.7. Some of thes Memory safety bugs were reported in Firefox 59, Firefox ESR 52.7, and Thunderbird 52.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8

CVE-2017-5432 [CRITICAL] CWE-416 CVE-2017-5432: A use-after-free vulnerability occurs during certain text input selection resulting in a potentially A use-after-free vulnerability occurs during certain text input selection resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVE-2017-5435 [CRITICAL] CWE-416 CVE-2017-5435: A use-after-free vulnerability occurs during transaction processing in the editor during design mode A use-after-free vulnerability occurs during transaction processing in the editor during design mode interactions. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVE-2017-5446 [CRITICAL] CWE-125 CVE-2017-5446: An out-of-bounds read when an HTTP/2 connection to a servers sends "DATA" frames with incorrect data An out-of-bounds read when an HTTP/2 connection to a servers sends "DATA" frames with incorrect data content. This leads to a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVE-2018-5099 [CRITICAL] CWE-416 CVE-2018-5099: A use-after-free vulnerability can occur when the widget listener is holding strong references to br A use-after-free vulnerability can occur when the widget listener is holding strong references to browser objects that have previously been freed, resulting in a potentially exploitable crash when these references are used. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

CVE-2018-5103 [CRITICAL] CWE-416 CVE-2018-5103: A use-after-free vulnerability can occur during mouse event handling due to issues with multiprocess A use-after-free vulnerability can occur during mouse event handling due to issues with multiprocess support. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

CVE-2017-5401 [CRITICAL] CWE-388 CVE-2017-5401: A crash triggerable by web content in which an "ErrorResult" references unassigned memory due to a l A crash triggerable by web content in which an "ErrorResult" references unassigned memory due to a logic error. The resulting crash may be exploitable. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

CVE-2017-5441 [CRITICAL] CWE-416 CVE-2017-5441: A use-after-free vulnerability when holding a selection during scroll events. This results in a pote A use-after-free vulnerability when holding a selection during scroll events. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVE-2017-5402 [CRITICAL] CWE-416 CVE-2017-5402: A use-after-free can occur when events are fired for a "FontFace" object after the object has been a A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

CVE-2024-2608 [HIGH] CWE-680 CVE-2024-2608: `AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` c `AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` could have experienced integer overflows, causing underallocation of an output buffer leading to an out of bounds write. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

CVE-2017-7750 [CRITICAL] CWE-416 CVE-2017-7750: A use-after-free vulnerability during video control operations when a "<track>" element holds a refe A use-after-free vulnerability during video control operations when a "" element holds a reference to an older window if that window has been replaced in the DOM. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

CVE-2026-6770 [MEDIUM] Mozilla Foundation Security Advisory 2026-32: CVE-2026-6770 Mozilla Foundation Security Advisory 2026-32 CVE: CVE-2026-6770 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 140.10

CVE-2017-5442 [CRITICAL] CWE-416 CVE-2017-5442: A use-after-free vulnerability during changes in style when manipulating DOM elements. This results A use-after-free vulnerability during changes in style when manipulating DOM elements. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVE-2017-5472 [CRITICAL] CWE-416 CVE-2017-5472: A use-after-free vulnerability with the frameloader during tree reconstruction while regenerating CS A use-after-free vulnerability with the frameloader during tree reconstruction while regenerating CSS layout when attempting to use a node in the tree that no longer exists. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

CVE-2017-7756 [CRITICAL] CWE-416 CVE-2017-7756: A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Req A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

CVE-2019-11709 [CRITICAL] CWE-787 CVE-2019-11709: Mozilla developers and community members reported memory safety bugs present in Firefox 67 and Firef Mozilla developers and community members reported memory safety bugs present in Firefox 67 and Firefox ESR 60.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 6

CVE-2020-12393 [HIGH] CWE-78 CVE-2020-12393: The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a req The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in command injection and arbitrary command execution. *Note: this issue only affects Firefox on Windows