Debian Firefox-Esr vulnerabilities

CVE-2026-5734 [CRITICAL] CVE-2026-5734: firefox - Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Fire... Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, 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, Firefox ESR < 140.9.1, Thunderbird < 149.0.2,

CVE-2026-2792 [CRITICAL] CVE-2026-2792: firefox - Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox ... Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140

CVE-2017-5461 [CRITICAL] CVE-2017-5461: firefox - Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x bef... Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by leveraging incorrect base64 operations. Scope: local sid: resolved (fixed in 52.0.1-1)

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-2024-11697 [HIGH] CVE-2024-11697: firefox - When handling keypress events, an attacker may have been able to trick a user in... When handling keypress events, an attacker may have been able to trick a user into bypassing the "Open Executable File?" confirmation dialog. This could have led to malicious code execution. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5. Scope: local sid: resolved (fixed in 133.0-1)

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-2025-11714 [HIGH] CVE-2025-11714: firefox - Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird... Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. 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 < 144, Firefox ESR < 115.29, Firefox ESR < 140.4,

CVE-2025-11715 [HIGH] CVE-2025-11715: firefox - Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox ... Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. 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 < 144, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4

CVE-2018-5146 [HIGH] CVE-2018-5146: firefox - An out of bounds memory write while processing Vorbis audio data was reported th... An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest. This vulnerability affects Firefox < 59.0.1, Firefox ESR < 52.7.2, and Thunderbird < 52.7. Scope: local sid: resolved (fixed in 59.0.1-1)

CVE-2025-14333 [HIGH] CVE-2025-14333: firefox - Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox ... Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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 < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6

CVE-2017-5391 [CRITICAL] CVE-2017-5391: firefox - Special "about:" pages used by web content, such as RSS feeds, can load privileg... Special "about:" pages used by web content, such as RSS feeds, can load privileged "about:" pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation. This vulnerability affects Firefox < 51. Scope: local sid: resolved (fixed in 51.0-1)

CVE-2016-1950 [HIGH] CVE-2016-1950: firefox - Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.1... Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.1, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to execute arbitrary code via crafted ASN.1 data in an X.509 certificate. Scope: local sid: resolved (fixed in 45.0-1)

CVE-2025-1009 [CRITICAL] CVE-2025-1009: firefox - An attacker could have caused a use-after-free via crafted XSLT data, leading to... An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135. Scope: local sid: resolved (fixed in 135.0-1)

CVE-2026-2771 [CRITICAL] CVE-2026-2771: firefox - Undefined behavior in the DOM: Core & HTML component. This vulnerability affects... Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-2785 [CRITICAL] CVE-2026-2785: firefox - Invalid pointer in the JavaScript Engine component. This vulnerability affects F... Invalid pointer in the JavaScript Engine 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-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-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-2025-10533 [HIGH] CVE-2025-10533: firefox - Integer overflow in the SVG component. This vulnerability affects Firefox < 143,... Integer overflow in the SVG component. This vulnerability affects Firefox < 143, Firefox ESR < 115.28, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. Scope: local sid: resolved (fixed in 143.0-1)

CVE-2025-8035 [HIGH] CVE-2025-8035: firefox - Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefo... Memory safety bugs present in 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, Firefox ESR < 128.13,