Mozilla Firefox Esr vulnerabilities
776 known vulnerabilities affecting mozilla/firefox_esr.
Total CVEs
776
CISA KEV
9
actively exploited
Public exploits
17
Exploited in wild
13
Severity breakdown
CRITICAL186HIGH315MEDIUM269LOW6
Vulnerabilities
Page 7 of 39
CVE-2023-6212HIGHCVSS 8.8fixed in 115.5.0≥ unspecified, < 115.5.02023-11-21
CVE-2023-6212 [HIGH] CWE-787 CVE-2023-6212: Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. Some of these b
Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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CVE-2023-6207HIGHCVSS 8.8fixed in 115.5.0≥ unspecified, < 115.5.02023-11-21
CVE-2023-6207 [HIGH] CWE-416 CVE-2023-6207: Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Fi
Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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CVE-2023-6206MEDIUMCVSS 5.4fixed in 115.5.0≥ unspecified, < 115.5.02023-11-21
CVE-2023-6206 [MEDIUM] CWE-1021 CVE-2023-6206: The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking dela
The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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CVE-2023-6204MEDIUMCVSS 6.5fixed in 115.5.0≥ unspecified, < 115.5.02023-11-21
CVE-2023-6204 [MEDIUM] CWE-125 CVE-2023-6204: On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bo
On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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CVE-2023-6205MEDIUMCVSS 6.5fixed in 115.5.0≥ unspecified, < 115.5.02023-11-21
CVE-2023-6205 [MEDIUM] CWE-416 CVE-2023-6205: It was possible to cause the use of a MessagePort after it had already been freed, which could poten
It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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CVE-2023-6209MEDIUMCVSS 6.5fixed in 115.5.0≥ unspecified, < 115.5.02023-11-21
CVE-2023-6209 [MEDIUM] CWE-22 CVE-2023-6209: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part
Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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CVE-2023-5730CRITICALCVSS 9.8fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5730 [CRITICAL] CWE-787 CVE-2023-5730: Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. Some of these b
Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. 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 < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5724HIGHCVSS 7.5fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5724 [HIGH] CWE-400 CVE-2023-5724: Drivers are not always robust to extremely large draw calls and in some cases this scenario could ha
Drivers are not always robust to extremely large draw calls and in some cases this scenario could have led to a crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5728HIGHCVSS 7.5fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5728 [HIGH] CWE-416 CVE-2023-5728: During garbage collection extra operations were performed on a object that should not be. This could
During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5725MEDIUMCVSS 4.3fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5725 [MEDIUM] CVE-2023-5725: A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance cou
A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5727MEDIUMCVSS 6.5fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5727 [MEDIUM] CVE-2023-5727: The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxb
The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxbundle files, which can run commands on a user's computer.
*Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5732MEDIUMCVSS 6.5fixed in 115.4.1≥ unspecified, < 115.42023-10-25
CVE-2023-5732 [MEDIUM] CVE-2023-5732: An attacker could have created a malicious link using bidirectional characters to spoof the location
An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited. This vulnerability affects Firefox < 117, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5726MEDIUMCVSS 4.3fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5726 [MEDIUM] CVE-2023-5726: A website could have obscured the full screen notification by using the file open dialog. This could
A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks.
*Note: This issue only affected macOS operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5721MEDIUMCVSS 4.3fixed in 115.4≥ unspecified, < 115.42023-10-25
CVE-2023-5721 [MEDIUM] CWE-1021 CVE-2023-5721: It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally
It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
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CVE-2023-5168CRITICALCVSS 9.8fixed in 115.3≥ unspecified, < 115.32023-09-27
CVE-2023-5168 [CRITICAL] CWE-787 CVE-2023-5168: A compromised content process could have provided malicious data to `FilterNodeD2D1` resulting in an
A compromised content process could have provided malicious data to `FilterNodeD2D1` resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process.
*This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbir
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CVE-2023-5174CRITICALCVSS 9.8fixed in 115.3≥ unspecified, < 115.32023-09-27
CVE-2023-5174 [CRITICAL] CWE-416 CVE-2023-5174: If Windows failed to duplicate a handle during process creation, the sandbox code may have inadverte
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash.
*This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vul
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CVE-2023-5176CRITICALCVSS 9.8fixed in 115.3≥ unspecified, < 115.32023-09-27
CVE-2023-5176 [CRITICAL] CWE-787 CVE-2023-5176: Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these b
Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. 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 < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
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CVE-2023-5169MEDIUMCVSS 6.5fixed in 115.3≥ unspecified, < 115.32023-09-27
CVE-2023-5169 [MEDIUM] CWE-787 CVE-2023-5169: A compromised content process could have provided malicious data in a `PathRecording` resulting in a
A compromised content process could have provided malicious data in a `PathRecording` resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
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CVE-2023-5171MEDIUMCVSS 6.5fixed in 115.3≥ unspecified, < 115.32023-09-27
CVE-2023-5171 [MEDIUM] CWE-416 CVE-2023-5171: During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allo
During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
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CVE-2023-4585HIGHCVSS 8.8fixed in 115.2≥ unspecified, < 115.22023-09-11
CVE-2023-4585 [HIGH] CWE-787 CVE-2023-4585: Memory safety bugs present in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1. Some of these b
Memory safety bugs present in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1. 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 < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
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