Debian Firefox vulnerabilities

CVE-2006-1730 [CRITICAL] CVE-2006-1730: firefox - Integer overflow in Mozilla Firefox and Thunderbird 1.x before 1.5.0.2 and 1.0.x... Integer overflow in Mozilla Firefox and Thunderbird 1.x before 1.5.0.2 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0.1 allows remote attackers to execute arbitrary code via a large number in the CSS letter-spacing property that leads to a heap-based buffer overflow. Scope: local sid: resolved (fixed in 1.5.dfsg+1.5.0.2-1)

CVE-2018-5098 [CRITICAL] CVE-2018-5098: firefox - A use-after-free vulnerability can occur when form input elements, focus, and se... A use-after-free vulnerability can occur when form input elements, focus, and selections are manipulated by script content. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58. Scope: local sid: resolved (fixed in 58.0-1)

CVE-2017-5430 [CRITICAL] CVE-2017-5430: firefox - Memory safety bugs were reported in Firefox 52, Firefox ESR 52, and Thunderbird ... Memory safety bugs were reported in Firefox 52, Firefox ESR 52, and Thunderbird 52. 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 < 52.1, Firefox ESR < 52.1, and Firefox < 53. Scope: local sid: resolved (fixed in 52.0

CVE-2017-7800 [CRITICAL] CVE-2017-7800: firefox - A use-after-free vulnerability can occur in WebSockets when the object holding t... A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the disconnection operation is finished. This results in an exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55. Scope: local sid: resolved (fixed in 55.0-1)

CVE-2018-5148 [CRITICAL] CVE-2018-5148: firefox - A use-after-free vulnerability can occur in the compositor during certain graphi... A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a reference counted one. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR < 52.7.3 and Firefox < 59.0.2. Scope: local sid: resolved (fixed in 59.0.2-1)

CVE-2018-5115 [HIGH] CVE-2018-5115: firefox - If an HTTP authentication prompt is triggered by a background network request fr... If an HTTP authentication prompt is triggered by a background network request from a page or extension, it is displayed over the currently loaded foreground page. Although the prompt contains the real domain making the request, this can result in user confusion about the originating site of the authentication request and may cause users to mistakenly send private cred

CVE-2020-15683 [CRITICAL] CVE-2020-15683: firefox - Mozilla developers and community members reported memory safety bugs present in ... Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 < 78.4, Firefox < 82, and Thunderbird < 78.4. Scope: l

CVE-2020-12395 [CRITICAL] CVE-2020-12395: firefox - Mozilla developers and community members reported memory safety bugs present in ... Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. 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 ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0. Scope:

CVE-2017-7749 [CRITICAL] CVE-2017-7749: firefox - A use-after-free vulnerability when using an incorrect URL during the reloading ... A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Scope: local sid: resolved (fixed in 54.0-1)

CVE-2026-4718 [HIGH] CVE-2026-4718: firefox - Undefined behavior in the WebRTC: Signaling component. This vulnerability affect... Undefined behavior in the WebRTC: Signaling component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2026-0877 [HIGH] CVE-2026-0877: firefox - Mitigation bypass in the DOM: Security component. This vulnerability affects Fir... Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7. Scope: local sid: resolved (fixed in 147.0-1)

CVE-2025-13018 [HIGH] CVE-2025-13018: firefox - Mitigation bypass in the DOM: Security component. This vulnerability affects Fir... Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 145, Firefox ESR < 140.5, Thunderbird < 145, and Thunderbird < 140.5. Scope: local sid: resolved (fixed in 145.0-1)

CVE-2006-1735 [CRITICAL] CVE-2006-1735: firefox - Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla S... Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0 allows remote attackers to execute arbitrary code by using an eval in an XBL method binding (XBL.method.eval) to create Javascript functions that are compiled with extra privileges. Scope: local sid: resolved (fixed in 1.5.dfsg+1.5.0.2-2)

CVE-2019-9800 [CRITICAL] CVE-2019-9800: firefox - Mozilla developers and community members reported memory safety bugs present in ... Mozilla developers and community members reported memory safety bugs present in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6. 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 < 60.7, Firefox < 67, and Firefox ESR <

CVE-2017-5403 [CRITICAL] CVE-2017-5403: firefox - When adding a range to an object in the DOM, it is possible to use "addRange" to... When adding a range to an object in the DOM, it is possible to use "addRange" to add the range to an incorrect root object. This triggers a use-after-free, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 52 and Thunderbird < 52. Scope: local sid: resolved (fixed in 52.0-1)

CVE-2006-6504 [CRITICAL] CVE-2006-6504: firefox - Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, and SeaMonkey before 1... Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to execute arbitrary code by appending an SVG comment DOM node to another type of document, which triggers memory corruption. Scope: local sid: resolved (fixed in 45.0-1)

CVE-2019-11691 [CRITICAL] CVE-2019-11691: firefox - A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) ... A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main thread to be called after it has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7. Scope: local sid: resolved (fixed in 67.0-2)

CVE-2016-2796 [HIGH] CVE-2016-2796: firefox - Heap-based buffer overflow in the graphite2::vm::Machine::Code::Code function in... Heap-based buffer overflow in the graphite2::vm::Machine::Code::Code function in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Graphite smart font. Scope: local sid: resolved (fixed in 45.0-1)

CVE-2023-5731 [CRITICAL] CVE-2023-5731: firefox - Memory safety bugs present in Firefox 118. Some of these bugs showed evidence of... Memory safety bugs present in Firefox 118. 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 < 119. Scope: local sid: resolved (fixed in 119.0-1)

CVE-2021-4129 [CRITICAL] CVE-2021-4129: firefox - Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele ... Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. 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