Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Filtered by product Firefox Esr
Total 743 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2022-26486 1 Mozilla 4 Firefox, Firefox Esr, Firefox Focus and 1 more 2025-10-22 N/A 9.6 CRITICAL
An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.
CVE-2022-26485 1 Mozilla 4 Firefox, Firefox Esr, Firefox Focus and 1 more 2025-10-22 N/A 8.8 HIGH
Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.
CVE-2020-6820 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2025-10-22 6.8 MEDIUM 8.1 HIGH
Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
CVE-2020-6819 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2025-10-22 6.8 MEDIUM 8.1 HIGH
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
CVE-2019-11708 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2025-10-22 10.0 HIGH 10.0 CRITICAL
Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.
CVE-2024-0751 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-20 N/A 8.8 HIGH
A malicious devtools extension could have been used to escalate privileges. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0750 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-20 N/A 8.8 HIGH
A bug in popup notifications delay calculation could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0746 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-20 N/A 6.5 MEDIUM
A Linux user opening the print preview dialog could have caused the browser to crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0753 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-06-07 N/A 6.5 MEDIUM
In specific HSTS configurations an attacker could have bypassed HSTS on a subdomain. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0742 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-05-30 N/A 4.3 MEDIUM
It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an incorrect timestamp used to prevent input after page load. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0741 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-05-30 N/A 6.5 MEDIUM
An out of bounds write in ANGLE could have allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2023-32215 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2025-05-27 N/A 8.8 HIGH
Mozilla developers and community members Gabriele Svelto, Andrew Osmond, Emily McDonough, Sebastian Hengst, Andrew McCreight and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 112 and Firefox ESR 102.10. 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 < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2023-32212 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2025-05-27 N/A 4.3 MEDIUM
An attacker could have positioned a `datalist` element to obscure the address bar. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
CVE-2024-0755 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-05-22 N/A 8.8 HIGH
Memory safety bugs present in Firefox 121, Firefox ESR 115.6, and Thunderbird 115.6. 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 < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2024-0749 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-05-22 N/A 4.3 MEDIUM
A phishing site could have repurposed an `about:` dialog to show phishing content with an incorrect origin in the address bar. This vulnerability affects Firefox < 122 and Thunderbird < 115.7.
CVE-2024-0747 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-05-22 N/A 6.5 MEDIUM
When a parent page loaded a child in an iframe with `unsafe-inline`, the parent Content Security Policy could have overridden the child Content Security Policy. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVE-2023-6858 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2025-05-07 N/A 8.8 HIGH
Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
CVE-2023-0767 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2025-05-05 N/A 8.8 HIGH
An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-5174 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2025-05-05 N/A 9.8 CRITICAL
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 vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
CVE-2023-5168 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2025-05-01 N/A 9.8 CRITICAL
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 Thunderbird < 115.3.