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 25 of 49
CVE-2017-7753P3CRITICALCVSS 9.1fixed in firefox 55.0-1 (sid)2017
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)
debian
CVE-2026-4699P3HIGHCVSS 7.5fixed in firefox 149.0-1 (sid)2026
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)
debian
CVE-2026-4693P3HIGHCVSS 7.5fixed in firefox 149.0-1 (sid)2026
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)
debian
CVE-2024-3852P3HIGHCVSS 7.5fixed in firefox 125.0.1-1 (sid)2024
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)
debian
CVE-2026-4709P3HIGHCVSS 7.5fixed in firefox 149.0-1 (sid)2026
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)
debian
CVE-2026-4706P3HIGHCVSS 7.5fixed in firefox 149.0-1 (sid)2026
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)
debian
CVE-2025-14327P3HIGHCVSS 7.5fixed in firefox 146.0-1 (sid)2025
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)
debian
CVE-2026-2783P3HIGHCVSS 7.5fixed in firefox 148.0-1 (sid)2026
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)
debian
CVE-2024-6603P3HIGHCVSS 7.4fixed in firefox 128.0-1 (sid)2024
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)
debian
CVE-2019-9812P3CRITICALCVSS 9.3fixed in firefox 69.0-1 (sid)2019
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
debian
CVE-2025-14325P3HIGHCVSS 7.3fixed in firefox 146.0-1 (sid)2025
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)
debian
CVE-2019-17024P3HIGHCVSS 8.8fixed in firefox 72.0-1 (sid)2019
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)
debian
CVE-2018-5147P3HIGHCVSS 8.8fixed in firefox 59.0.1-1 (sid)2018
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)
debian
CVE-2018-12389P3HIGHCVSS 8.8fixed in firefox-esr 60.3.0esr-1 (bookworm)2018
CVE-2018-12389 [HIGH] CVE-2018-12389: firefox-esr - Mozilla developers and community members reported memory safety bugs present in ...
Mozilla developers and community members reported memory safety bugs present in Firefox ESR 60.2. 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 Firefox ESR < 60.3 and Thunderbird < 60.3.
Scope: local
bookworm: resolved (fixed i
debian
CVE-2016-1954P3HIGHCVSS 8.8fixed in firefox 45.0-1 (sid)2016
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
debian
CVE-2020-12419P3HIGHCVSS 8.8fixed in firefox 78.0-1 (sid)2020
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)
debian
CVE-2018-5130P3HIGHCVSS 8.8fixed in firefox 59.0-1 (sid)2018
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)
debian
CVE-2017-5436P3HIGHCVSS 8.8fixed in firefox 52.0.1-1 (sid)2017
CVE-2017-5436 [HIGH] CVE-2017-5436: firefox - An out-of-bounds write in the Graphite 2 library triggered with a maliciously cr...
An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as Mozilla products. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
Scope: local
sid: resolved (fixed in 52
debian
CVE-2020-6514P3MEDIUMCVSS 6.5fixed in chromium 87.0.4280.88-0.1 (bookworm)2020
CVE-2020-6514 [MEDIUM] CVE-2020-6514: chromium - Inappropriate implementation in WebRTC in Google Chrome prior to 84.0.4147.89 al...
Inappropriate implementation in WebRTC in Google Chrome prior to 84.0.4147.89 allowed an attacker in a privileged network position to potentially exploit heap corruption via a crafted SCTP stream.
Scope: local
bookworm: resolved (fixed in 87.0.4280.88-0.1)
bullseye: resolved (fixed in 87.0.4280.88-0.1)
forky: resolved (fixed in 87.0.4280.88-0.1)
sid: resolved (fixe
debian
CVE-2019-17005P3HIGHCVSS 8.8fixed in firefox 71.0-1 (sid)2019
CVE-2019-17005 [HIGH] CVE-2019-17005: firefox - The plain text serializer used a fixed-size array for the number of <ol> element...
The plain text serializer used a fixed-size array for the number of elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
Scope: local
sid: resolved (fixed in 71.0-1)
debian