Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Filtered by product Firefox Esr
Total 490 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-32211 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
A type checking bug would have led to invalid code being compiled. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-32207 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
A missing delay in popup notifications could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-32206 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
An out-of-bound read could have led to a crash in the RLBox Expat driver. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-32205 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 4.3 MEDIUM
In multiple cases browser prompts could have been obscured by popups controlled by content. These could have led to potential user confusion and spoofing attacks. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-29547 1 Mozilla 3 Firefox, Firefox Esr, Focus 2026-06-17 N/A 6.5 MEDIUM
When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have been created, when it should have silently failed. This could have led to a desynchronization in expected results when reading from the secure cookie. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
CVE-2023-29545 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing environment variable names would have resolved those in the context of the current user. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVE-2023-29542 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 9.8 CRITICAL
A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVE-2023-29532 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 5.5 MEDIUM
A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server. *Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVE-2023-29531 2 Apple, Mozilla 4 Macos, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 9.8 CRITICAL
An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVE-2023-28176 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. 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 < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-28164 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Dragging a URL from a cross-origin iframe that was removed during the drag could have led to user confusion and website spoofing attacks. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-28163 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. <br>*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-28162 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
While implementing AudioWorklets, some code may have casted one type to another, invalid, dynamic type. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-25752 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
When accessing throttled streams, the count of available bytes needed to be checked in the calling function to be within bounds. This may have lead future code to be incorrect and vulnerable. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-25751 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
CVE-2023-25746 1 Mozilla 2 Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
Memory safety bugs present in Firefox ESR 102.7. 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 Thunderbird < 102.8 and Firefox ESR < 102.8.
CVE-2023-25744 1 Mozilla 2 Firefox, Firefox Esr 2026-06-17 N/A 8.8 HIGH
Mmemory safety bugs present in Firefox 109 and Firefox ESR 102.7. 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 < 110 and Firefox ESR < 102.8.
CVE-2023-25742 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab to crash. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-25739 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-25738 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 6.5 MEDIUM
Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and could have resulted in invalid values which in turn would cause the browser to attempt out of bounds access to related variables.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.