CVE Intelligence

Mozilla vulnerabilities

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Published CVEs affecting Mozilla products: 641 record(s), with severity, exploitation and fixes.

Firefox 605Thunderbird 522Firefox Mobile 17Firefox ESR 10Firefox 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-2026-100759 High · 8.1 CWE-457 Sep 29, 2026
Uninitialized memory in the Storage: Quota Manager component
Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100758 Critical · 9.6 CWE-284 Sep 29, 2026
Sandbox escape in the DOM: Navigation component
Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100757 High · 8.8 CWE-416 Sep 29, 2026
Use-after-free in the Widget component
Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100766 Medium · 4.3 CWE-200 Sep 29, 2026
Information disclosure in the Networking: JAR component
Information disclosure in the Networking: JAR component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100765 High · 8.8 CWE-416 Sep 29, 2026
Use-after-free in the JavaScript: WebAssembly component
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
CVE-2026-100764 High · 8.8 CWE-119 Sep 29, 2026
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
CVE-2026-100763 Critical · 9.1 CWE-119 Sep 29, 2026
Incorrect boundary conditions in the Graphics: WebGPU component
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
CVE-2026-100762 Critical · 9.6 CWE-416 Sep 29, 2026
Sandbox escape due to use-after-free in the DOM: Content Processes component
Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100767 High · 8.8 CWE-416 Sep 29, 2026
Use-after-free in the Networking: Cache component
Use-after-free in the Networking: Cache component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100756 High · 8.1 CWE-119 Sep 29, 2026
Incorrect boundary conditions in the Audio/Video: Playback component
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-92240 Critical · 9.1 CWE-125 Sep 15, 2026
Out-of-bounds read in IMAP response parser
A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged '* ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
CVE-2026-92239 High · 8.1 CWE-125 Sep 15, 2026
Buffer overrun in IMAP
A maliciously constructed IMAP line could cause an out-of-bounds buffer read. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
CVE-2026-92238 Critical · 9.8 CWE-444 Sep 15, 2026
Ambiguous parsing of mail headers
A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
CVE-2026-92079 Critical · 9.1 CWE-693 Sep 15, 2026
Mitigation bypass in the Widget: Win32 component
Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92078 Medium · 6.5 CWE-770 Sep 15, 2026
Denial-of-service in the Security component
Denial-of-service in the Security component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92077 Medium · 6.5 CWE-770 Sep 15, 2026
Denial-of-service in the SVG component
Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92076 High · 8.8 CWE-119 Sep 15, 2026
Incorrect boundary conditions in the Networking component
Incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92075 Critical · 9.1 CWE-693 Sep 15, 2026
Mitigation bypass in the Networking component
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92074 High · 8.8 CWE-693 Sep 15, 2026
Mitigation bypass in the Popup Blocker component
Mitigation bypass in the Popup Blocker component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92073 High · 8.8 CWE-269 Sep 15, 2026
Privilege escalation in the Enterprise Policies component
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92072 High · 8.0 CWE-119 Sep 15, 2026
Incorrect boundary conditions in the Safe Browsing component
Incorrect boundary conditions in the Safe Browsing component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92071 Critical · 9.6 CWE-119 Sep 15, 2026
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92070 Medium · 4.3 CWE-200 Sep 15, 2026
Information disclosure in the Networking component
Information disclosure in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92069 Medium · 5.4 CWE-451 Sep 15, 2026
Spoofing issue in the DOM: Navigation component
Spoofing issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVE-2026-92068 Medium · 5.4 CWE-346 Sep 15, 2026
Site isolation issue in the Reader Mode component
Site isolation issue in the Reader Mode component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.