Debian Firefox vulnerabilities

CVE-2025-59375 [HIGH] CVE-2025-59375: expat - libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory ... libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. Scope: local bookworm: open bullseye: open forky: resolved (fixed in 2.7.2-1) sid: resolved (fixed in 2.7.2-1) trixie: open

CVE-2017-7753 [CRITICAL] CVE-2017-7753: firefox - An out-of-bounds read occurs when applying style rules to pseudo-elements, such ... An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55. Scope: local sid: resolved (fixed in 55.0-1)

CVE-2026-4699 [HIGH] CVE-2026-4699: firefox - Incorrect boundary conditions in the Layout: Text and Fonts component. This vuln... Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2026-4693 [HIGH] CVE-2026-4693: firefox - Incorrect boundary conditions in the Audio/Video: Playback component. This vulne... Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2024-3852 [HIGH] CVE-2024-3852: firefox - GetBoundName could return the wrong version of an object when JIT optimizations ... GetBoundName could return the wrong version of an object when JIT optimizations were applied. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10. Scope: local sid: resolved (fixed in 125.0.1-1)

CVE-2026-4709 [HIGH] CVE-2026-4709: firefox - Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerabil... Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2026-4706 [HIGH] CVE-2026-4706: firefox - Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerab... Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2006-0748 [CRITICAL] CVE-2006-0748: firefox - Mozilla Firefox and Thunderbird 1.x before 1.5.0.2 and 1.0.x before 1.0.8, Mozil... 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 "an invalid and non-sensical ordering of table-related tags" that results in a negative array index. Scope: local sid: resolved (fixed in 1.5.dfsg+1.5.0.2-1)

CVE-2025-14327 [HIGH] CVE-2025-14327: firefox - Spoofing issue in the Downloads Panel component. This vulnerability affects Fire... Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird < 140.7. Scope: local sid: resolved (fixed in 146.0-1)

CVE-2026-2783 [HIGH] CVE-2026-2783: firefox - Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT c... Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-2803 [HIGH] CVE-2026-2803: firefox - Information disclosure, mitigation bypass in the Settings UI component. This vul... Information disclosure, mitigation bypass in the Settings UI component. This vulnerability affects Firefox < 148 and Thunderbird < 148. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2024-6603 [HIGH] CVE-2024-6603: firefox - In an out-of-memory scenario an allocation could fail but free would have been c... In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128. Scope: local sid: resolved (fixed in 128.0-1)

CVE-2024-4778 [CRITICAL] CVE-2024-4778: firefox - Memory safety bugs present in Firefox 125. Some of these bugs showed evidence of... Memory safety bugs present in Firefox 125. 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 < 126. Scope: local sid: resolved (fixed in 126.0-1)

CVE-2019-9812 [CRITICAL] CVE-2019-9812: firefox - Given a compromised sandboxed content process due to a separate vulnerability, i... Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the s

CVE-2025-14325 [HIGH] CVE-2025-14325: firefox - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability a... JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6. Scope: local sid: resolved (fixed in 146.0-1)

CVE-2019-17024 [HIGH] CVE-2019-17024: firefox - Mozilla developers reported memory safety bugs present in Firefox 71 and Firefox... Mozilla developers reported memory safety bugs present in Firefox 71 and Firefox ESR 68.3. 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 < 68.4 and Firefox < 72. Scope: local sid: resolved (fixed in 72.0-1)

CVE-2018-5147 [HIGH] CVE-2018-5147: firefox - The libtremor library has the same flaw as CVE-2018-5146. This library is used b... The libtremor library has the same flaw as CVE-2018-5146. This library is used by Firefox in place of libvorbis on Android and ARM platforms. This vulnerability affects Firefox ESR < 52.7.2 and Firefox < 59.0.1. Scope: local sid: resolved (fixed in 59.0.1-1)

CVE-2016-1954 [HIGH] CVE-2016-1954: firefox - The nsCSPContext::SendReports function in dom/security/nsCSPContext.cpp in Mozil... The nsCSPContext::SendReports function in dom/security/nsCSPContext.cpp in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 does not prevent use of a non-HTTP report-uri for a Content Security Policy (CSP) violation report, which allows remote attackers to cause a denial of service (data overwrite) or possibly gain privileges by specifying a URL of a local

CVE-2020-12419 [HIGH] CVE-2020-12419: firefox - When processing callbacks that occurred during window flushing in the parent pro... When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0. Scope: local sid: resolved (fixed in 78.0-1)

CVE-2018-5130 [HIGH] CVE-2018-5130: firefox - When packets with a mismatched RTP payload type are sent in WebRTC connections, ... When packets with a mismatched RTP payload type are sent in WebRTC connections, in some circumstances a potentially exploitable crash is triggered. This vulnerability affects Firefox ESR < 52.7 and Firefox < 59. Scope: local sid: resolved (fixed in 59.0-1)