Debian Firefox-Esr vulnerabilities
965 known vulnerabilities affecting debian/firefox-esr.
Total CVEs
965
CISA KEV
11
actively exploited
Public exploits
28
Exploited in wild
16
Severity breakdown
CRITICAL236HIGH418MEDIUM292LOW19
Vulnerabilities
Page 6 of 49
CVE-2024-11697P3HIGHCVSS 8.8fixed in firefox 133.0-1 (sid)2024
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)
debian
CVE-2018-5146P3HIGHCVSS 8.8fixed in firefox 59.0.1-1 (sid)2018
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)
debian
CVE-2018-12387P3CRITICALCVSS 9.1fixed in firefox 62.0.3-1 (sid)2018
CVE-2018-12387 [CRITICAL] CVE-2018-12387: firefox - A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push w...
A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox
debian
CVE-2017-5391P3CRITICALCVSS 9.8fixed in firefox 51.0-1 (sid)2017
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)
debian
CVE-2016-1950P3HIGHCVSS 8.8fixed in firefox 45.0-1 (sid)2016
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)
debian
CVE-2025-1009P3CRITICALCVSS 9.8fixed in firefox 135.0-1 (sid)2025
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)
debian
CVE-2026-2774P3CRITICALCVSS 9.8fixed in firefox 148.0-1 (sid)2026
CVE-2026-2774 [CRITICAL] CVE-2026-2774: firefox - Integer overflow in the Audio/Video component. This vulnerability affects Firefo...
Integer overflow in the Audio/Video 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)
debian
CVE-2018-18500P3CRITICALCVSS 9.8fixed in firefox 65.0-1 (sid)2018
CVE-2018-18500 [CRITICAL] CVE-2018-18500: firefox - A use-after-free vulnerability can occur while parsing an HTML5 stream in concer...
A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Scope: local
sid: resolved (fixed in 65.0-1)
debian
CVE-2026-2762P3CRITICALCVSS 9.8fixed in firefox 148.0-1 (sid)2026
CVE-2026-2762 [CRITICAL] CVE-2026-2762: firefox - Integer overflow in the JavaScript: Standard Library component. This vulnerabili...
Integer overflow in the JavaScript: Standard Library 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)
debian
CVE-2025-14324P3CRITICALCVSS 9.8fixed in firefox 146.0-1 (sid)2025
CVE-2025-14324 [CRITICAL] CVE-2025-14324: 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 < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
Scope: local
sid: resolved (fixed in 146.0-1)
debian
CVE-2025-14330P3CRITICALCVSS 9.8fixed in firefox 146.0-1 (sid)2025
CVE-2025-14330 [CRITICAL] CVE-2025-14330: 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)
debian
CVE-2026-2777P3CRITICALCVSS 9.8fixed in firefox 148.0-1 (sid)2026
CVE-2026-2777 [CRITICAL] CVE-2026-2777: firefox - Privilege escalation in the Messaging System component. This vulnerability affec...
Privilege escalation in the Messaging System 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)
debian
CVE-2016-1962P3CRITICALCVSS 9.8fixed in firefox 45.0-1 (sid)2016
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)
debian
CVE-2016-5280P3CRITICALCVSS 9.8fixed in firefox 49.0-1 (sid)2016
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)
debian
CVE-2024-2614P3HIGHCVSS 8.8fixed in firefox 124.0-1 (sid)2024
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
debian
CVE-2024-3854P3HIGHCVSS 8.8fixed in firefox 125.0.1-1 (sid)2024
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)
debian
CVE-2018-18498P3CRITICALCVSS 9.8fixed in firefox 64.0-1 (sid)2018
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)
debian
CVE-2025-8034P3HIGHCVSS 8.8fixed in firefox 141.0-1 (sid)2025
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
debian
CVE-2022-46872P3HIGHCVSS 8.6fixed in firefox 108.0-1 (sid)2022
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)
debian
CVE-2026-0891P3HIGHCVSS 8.1fixed in firefox 147.0-1 (sid)2026
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.
debian