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-2026-16395 Critical · 9.8 CWE-190 Jul 21, 2026
Integer overflow in the Audio/Video component
Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16394 Critical · 9.1 CWE-693 Jul 21, 2026
Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16393 Critical · 9.1 CWE-119 Jul 21, 2026
Incorrect boundary conditions in the Graphics: WebGPU component
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16392 Critical · 9.1 CWE-670 Jul 21, 2026
JIT miscompilation in the JavaScript Engine: JIT component
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16391 High · 7.5 CWE-200 Jul 21, 2026
Information disclosure in the Storage: IndexedDB component
Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16390 Critical · 9.1 CWE-693 Jul 21, 2026
Mitigation bypass in the Enterprise Policies component
Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16389 Critical · 9.8 CWE-190 Jul 21, 2026
Incorrect boundary conditions, integer overflow in the Libraries component in NSS
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16388 Critical · 9.8 CWE-693 Jul 21, 2026
Sandbox escape in the DOM: Networking component
Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16387 Critical · 9.8 CWE-200 Jul 21, 2026
Site isolation issue in the Networking component
Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16386 High · 7.5 CWE-908 Jul 21, 2026
Information disclosure due to uninitialized memory in the Graphics: WebGPU component
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16385 High · 7.5 CWE-908 Jul 21, 2026
Information disclosure due to uninitialized memory in the Graphics: WebGPU component
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16384 High · 7.5 CWE-908 Jul 21, 2026
Information disclosure due to uninitialized memory in the Graphics: WebGPU component
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16383 Critical · 9.8 CWE-693 Jul 21, 2026
Mitigation bypass in the DOM: Networking component
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16382 Critical · 9.8 CWE-693 Jul 21, 2026
Mitigation bypass in the DOM: Service Workers component
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16381 Critical · 9.1 CWE-346 Jul 21, 2026
Same-origin policy bypass in the Networking: DNS component
Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16380 Critical · 9.1 CWE-693 Jul 21, 2026
Mitigation bypass in the Networking component
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16379 High · 8.8 CWE-269 Jul 21, 2026
Privilege escalation in the DOM: Content Processes component
Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16378 High · 7.5 CWE-20 Jul 21, 2026
Other issue in the DOM: Copy & Paste and Drag & Drop component
Other issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16377 Critical · 9.8 CWE-693 Jul 21, 2026
Mitigation bypass in the PDF Viewer component
Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16376 High · 7.5 CWE-400 Jul 21, 2026
Denial-of-service in the Graphics: WebGPU component
Denial-of-service in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16375 Critical · 9.8 CWE-346 Jul 21, 2026
Site isolation issue in the Networking: HTTP component
Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16374 High · 7.5 CWE-200 Jul 21, 2026
Information disclosure in the Framework component in DevTools
Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16373 High · 7.5 CWE-200 Jul 21, 2026
Information disclosure in the Privacy component in Firefox for Android
Information disclosure in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 153.
CVE-2026-16372 High · 8.8 CWE-269 Jul 21, 2026
Privilege escalation in the DOM: Content Processes component
Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVE-2026-16371 High · 8.8 CWE-269 Jul 21, 2026
Privilege escalation in the DOM: Navigation component
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, Thunderbird 140.13, Firefox ESR 140.15, and Thunderbird 140.15.