Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Total 3506 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-2786 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2785 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2783 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 7.5 HIGH
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.
CVE-2026-2774 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
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.
CVE-2026-2767 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2025-3909 1 Mozilla 1 Thunderbird 2026-02-26 N/A 8.1 HIGH
Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested email attachment (message/rfc822) and setting its content type to application/pdf, Thunderbird may incorrectly render it as HTML when opened, allowing the embedded JavaScript to run without requiring a file download. This behavior relies on Thunderbird auto-saving the attachment to /tmp and linking to it via the file:/// protocol, potentially enabling JavaScript execution as part of the HTML. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1.
CVE-2026-2761 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 10.0 CRITICAL
Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2760 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 10.0 CRITICAL
Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2759 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2758 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2757 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2780 1 Mozilla 2 Firefox, Thunderbird 2026-02-26 N/A 9.8 CRITICAL
Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2806 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.1 CRITICAL
Uninitialized memory in the Graphics: Text component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
CVE-2026-2805 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.8 CRITICAL
Invalid pointer in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
CVE-2026-2807 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.8 CRITICAL
Memory safety bugs present in Firefox 147 and Thunderbird 147. 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 < 148 and Thunderbird < 148.
CVE-2026-2793 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.8 CRITICAL
Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2792 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.8 CRITICAL
Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2777 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.8 CRITICAL
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.
CVE-2026-2782 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 9.8 CRITICAL
Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
CVE-2026-2798 1 Mozilla 2 Firefox, Thunderbird 2026-02-25 N/A 8.8 HIGH
Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148.