CVE Intelligence

Mozilla vulnerabilities

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Published CVEs affecting Mozilla products: 642 record(s), with severity, exploitation and fixes.

Firefox 606Thunderbird 523Firefox Mobile 17Firefox ESR 11Firefox Focus 4Focus 3Thunderbird Esr 2Firefox for Android 2Firefox Os 1Seamonkey 1Thin-vec 10din Scanner 1Rhino 1Klar 1Node-convict 1Network Security Services 1

Exploited only (KEV) →

CVE-2026-7321 Critical · 9.6 CWE-120 Apr 28, 2026
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.
CVE-2026-7320 High · 7.5 CWE-119 Apr 28, 2026
Information disclosure due to incorrect boundary conditions in the Audio/Video component
Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVE-2026-6786 High · 7.5 CWE-125 Apr 26, 2026
Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6785 High · 7.5 CWE-125 Apr 26, 2026
Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6784 High · 7.5 CWE-125 Apr 21, 2026
Memory safety bugs fixed in Firefox 150 and Thunderbird 150
Memory safety bugs present in Firefox 149 and Thunderbird 149. 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 was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6783 Medium · 5.3 CWE-190 Apr 21, 2026
Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component
Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6782 High · 7.5 CWE-200 Apr 21, 2026
Information disclosure in the IP Protection component
Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6781 High · 7.5 CWE-400 Apr 21, 2026
Denial-of-service in the Audio/Video: Playback component
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6780 High · 7.5 CWE-400 Apr 21, 2026
Denial-of-service in the Audio/Video: Playback component
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6779 Medium · 5.3 CWE-20 Apr 21, 2026
Other issue in the JavaScript Engine component
Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6778 Medium · 5.3 CWE-476 Apr 21, 2026
Invalid pointer in the Audio/Video: Playback component
Invalid pointer in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6777 Medium · 5.3 CWE-20 Apr 21, 2026
Other issue in the Networking: DNS component
Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6776 High · 7.8 CWE-119 Apr 21, 2026
Incorrect boundary conditions in the WebRTC: Networking component
Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6775 Medium · 5.3 CWE-119 Apr 21, 2026
Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6774 Medium · 5.4 CWE-693 Apr 21, 2026
Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6773 High · 7.5 CWE-190 Apr 21, 2026
Denial-of-service due to integer overflow in the Graphics: WebGPU component
Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6772 High · 7.5 CWE-754 Apr 21, 2026
Incorrect boundary conditions in the Libraries component in NSS
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6771 Critical · 9.8 CWE-288 Apr 21, 2026
Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6770 Medium · 6.5 CWE-200 Apr 21, 2026
Other issue in the Storage: IndexedDB component
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6769 High · 8.8 CWE-269 Apr 21, 2026
Privilege escalation in the Debugger component
Privilege escalation in the Debugger component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6768 Critical · 9.8 CWE-288 Apr 21, 2026
Mitigation bypass in the Networking: Cookies component
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6767 Medium · 5.3 CWE-119 Apr 21, 2026
Other issue in the Libraries component in NSS
Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6766 High · 7.5 CWE-754 Apr 21, 2026
Incorrect boundary conditions in the Libraries component in NSS
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6765 Medium · 5.3 CWE-359 Apr 21, 2026
Information disclosure in the Form Autofill component
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6764 Medium · 6.5 CWE-119 Apr 21, 2026
Incorrect boundary conditions in the DOM: Device Interfaces component
Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.