Browse CVEs

CRITICAL 9.8 CVE-2026-2780 Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 14… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2781 Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2782 Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 14… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2784 Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 14… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2785 Invalid pointer in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird … Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 10.0 CVE-2026-2768 Sandbox escape in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird … Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2767 Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunder… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2770 Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbi… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2771 Undefined behavior in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2772 Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbir… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2773 Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunder… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2774 Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, a… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2775 Mitigation bypass in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird … Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 10.0 CVE-2026-2760 Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 11… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 10.0 CVE-2026-2761 Sandbox escape in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird … Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2758 Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, … Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2759 Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2762 Integer overflow in the JavaScript: Standard Library component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and … Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2763 Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 14… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2764 JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox … Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2765 Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 1… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2766 Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderb… Firefox 140.8.0 / 148.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2634 Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attack… Firefox 147.4+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-2757 Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.… Firefox 115.33.0 / 140.8.0+ Fix from $2,3002026-02-24 CRITICAL 9.8 CVE-2026-0892 Memory safety bugs present in Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enoug… Firefox 147.0+ Fix from $2,3002026-01-13 CRITICAL 10.0 CVE-2026-0881 Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147. Firefox 147.0+ Fix from $2,3002026-01-13 CRITICAL 9.8 CVE-2026-0879 Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firef… Firefox 115.32.0 / 140.7.0+ Fix from $2,3002026-01-13 CRITICAL 9.8 CVE-2026-0884 Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 1… Firefox 140.7.0 / 147.0+ Fix from $2,3002026-01-13 CRITICAL 9.8 CVE-2025-14860 Use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 146.0.1. Firefox 146.0.1+ Fix from $2,3002025-12-18 CRITICAL 9.8 CVE-2025-14326 Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146. Firefox 146.0+ Fix from $2,3002025-12-09