Debian Firefox vulnerabilities

CVE-2026-5735 [CRITICAL] CVE-2026-5735: firefox - Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of t... Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 < 149.0.2 and Thunderbird < 149.0.2. Scope: local sid: resolved (fixed in 149.0.2-1)

CVE-2016-1962 [CRITICAL] CVE-2016-1962: firefox - Use-after-free vulnerability in the mozilla::DataChannelConnection::Close functi... Use-after-free vulnerability in the mozilla::DataChannelConnection::Close function in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code by leveraging mishandling of WebRTC data-channel connections. Scope: local sid: resolved (fixed in 45.0-1)

CVE-2016-5280 [CRITICAL] CVE-2016-5280: firefox - Use-after-free vulnerability in the mozilla::nsTextNodeDirectionalityMap::Remove... Use-after-free vulnerability in the mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code via bidirectional text. Scope: local sid: resolved (fixed in 49.0-1)

CVE-2026-4724 [CRITICAL] CVE-2026-4724: firefox - Undefined behavior in the Audio/Video component. This vulnerability affects Fire... Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149 and Thunderbird < 149. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2024-2614 [HIGH] CVE-2024-2614: firefox - Memory safety bugs present in Firefox 123, Firefox ESR 115.8, and Thunderbird 11... Memory safety bugs present in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8. 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 < 124, Firefox ESR < 115.9, and Thunderbird < 115.9. Scope: local sid: resolved (fixed in 12

CVE-2024-3854 [HIGH] CVE-2024-3854: firefox - In some code patterns the JIT incorrectly optimized switch statements and genera... In some code patterns the JIT incorrectly optimized switch statements and generated code with out-of-bounds-reads. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10. Scope: local sid: resolved (fixed in 125.0.1-1)

CVE-2018-18498 [CRITICAL] CVE-2018-18498: firefox - A potential vulnerability leading to an integer overflow can occur during buffer... A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64. Scope: local sid: resolved (fixed in 64.0-1)

CVE-2025-8034 [HIGH] CVE-2025-8034: firefox - Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbir... Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 < 141, F

CVE-2022-46872 [HIGH] CVE-2022-46872: firefox - An attacker who compromised a content process could have partially escaped the s... An attacker who compromised a content process could have partially escaped the sandbox to read arbitrary files via clipboard-related IPC messages.*This bug only affects Thunderbird for Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 108, Firefox ESR < 102.6, and Thunderbird < 102.6. Scope: local sid: resolved (fixed in 108.0-1)

CVE-2026-0891 [HIGH] CVE-2026-0891: firefox - Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox ... Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. 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 < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.

CVE-2018-5158 [HIGH] CVE-2018-5158: firefox - The PDF viewer does not sufficiently sanitize PostScript calculator functions, a... The PDF viewer does not sufficiently sanitize PostScript calculator functions, allowing malicious JavaScript to be injected through a crafted PDF file. This JavaScript can then be run with the permissions of the PDF viewer by its worker. This vulnerability affects Firefox ESR < 52.8 and Firefox < 60. Scope: local sid: resolved (fixed in 60.0-1)

CVE-2018-5093 [HIGH] CVE-2018-5093: firefox - A heap buffer overflow vulnerability may occur in WebAssembly during Memory/Tabl... A heap buffer overflow vulnerability may occur in WebAssembly during Memory/Table resizing, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 58. Scope: local sid: resolved (fixed in 58.0-1)

CVE-2016-2814 [HIGH] CVE-2016-2814: firefox - Heap-based buffer overflow in the stagefright::SampleTable::parseSampleCencInfo ... Heap-based buffer overflow in the stagefright::SampleTable::parseSampleCencInfo function in libstagefright in Mozilla Firefox before 46.0, Firefox ESR 38.x before 38.8, and Firefox ESR 45.x before 45.1 allows remote attackers to execute arbitrary code via crafted CENC offsets that lead to mismanagement of the sizes table. Scope: local sid: resolved (fixed in 46.0-1)

CVE-2020-6463 [HIGH] CVE-2020-6463: chromium - Use after free in ANGLE in Google Chrome prior to 81.0.4044.122 allowed a remote... Use after free in ANGLE in Google Chrome prior to 81.0.4044.122 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Scope: local bookworm: resolved (fixed in 83.0.4103.83-1) bullseye: resolved (fixed in 83.0.4103.83-1) forky: resolved (fixed in 83.0.4103.83-1) sid: resolved (fixed in 83.0.4103.83-1) trixie: resolved (fixed in 83.

CVE-2025-49709 [CRITICAL] CVE-2025-49709: firefox - Certain canvas operations could have lead to memory corruption. This vulnerabili... Certain canvas operations could have lead to memory corruption. This vulnerability affects Firefox < 139.0.4. Scope: local sid: resolved (fixed in 139.0.4-1)

CVE-2026-4723 [CRITICAL] CVE-2026-4723: firefox - Use-after-free in the JavaScript Engine component. This vulnerability affects Fi... Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Thunderbird < 149. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2025-1016 [CRITICAL] CVE-2025-1016: firefox - Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, ... Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. 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 < 135, Firefox ESR < 115.20, Fi

CVE-2025-0242 [MEDIUM] CVE-2025-0242: firefox - Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, ... Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, and Thunderbird 128.5. 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 < 134, Firefox ESR < 128.6, Firef

CVE-2016-2811 [HIGH] CVE-2016-2811: firefox - Use-after-free vulnerability in the ServiceWorkerInfo class in the Service Worke... Use-after-free vulnerability in the ServiceWorkerInfo class in the Service Worker subsystem in Mozilla Firefox before 46.0 allows remote attackers to execute arbitrary code via vectors related to the BeginReading method. Scope: local sid: resolved (fixed in 46.0-1)

CVE-2026-2781 [CRITICAL] CVE-2026-2781: firefox - Integer overflow in the Libraries component in NSS. This vulnerability affects F... Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)