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Vulnerabilities published in the last 30 days. Filter by severity, exploit status, or attack vector.

Score
Vulnerability
Published
9.8 CRITICAL
CVE-2026-16412 — Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153

Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploite…

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.8 CRITICAL
CVE-2026-16411 — Memory safety bugs fixed in Firefox 153

Memory safety bugs present in Firefox 152. 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…

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.8 CRITICAL
CVE-2026-16410 — 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.

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
7.5 HIGH
CVE-2026-16409 — Invalid pointer in the Security: PSM component

Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.8 CRITICAL
CVE-2026-16408 — Integer overflow in the Audio/Video: Playback component

Integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 22, 2026
Jul 21, 2026
Jul 22, 2026
9.8 CRITICAL
CVE-2026-16407 — 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.

firefox thunderbird | Remote | Misconfiguration
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.1 CRITICAL
CVE-2026-16406 — Mitigation bypass in the Networking component

Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Misconfiguration
Jul 21, 2026 Jul 22, 2026
Jul 21, 2026
Jul 22, 2026
7.5 HIGH
CVE-2026-16405 — Information disclosure in the Networking: WebSockets component

Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

firefox thunderbird | Remote | Information Disclosure
Jul 21, 2026 Jul 22, 2026
Jul 21, 2026
Jul 22, 2026
7.4 HIGH
CVE-2026-16404 — Spoofing issue in Firefox for Android

Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.

Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
6.5 MEDIUM
CVE-2026-16403 — Spoofing issue in the Address Bar component

Spoofing issue in the Address Bar component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.8 CRITICAL
CVE-2026-16402 — Integer overflow in the Graphics: ImageLib component

Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.8 CRITICAL
CVE-2026-16401 — Privilege escalation in the Data Loss Prevention component

Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Authorization
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
7.5 HIGH
CVE-2026-16400 — Information disclosure in the DOM: Security component

Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Information Disclosure
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
7.5 HIGH
CVE-2026-16399 — Site isolation issue in the DOM: Navigation component

Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Misconfiguration
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
7.5 HIGH
CVE-2026-16398 — Site isolation issue in the Graphics component

Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Misconfiguration
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
6.5 MEDIUM
CVE-2026-16397 — Clickjacking issue in the WebExtensions component in Firefox for Android

Clickjacking issue in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 153.

firefox | Remote | Misconfiguration
Jul 21, 2026 Jul 22, 2026
Jul 21, 2026
Jul 22, 2026
9.8 CRITICAL
CVE-2026-16396 — Privilege escalation in WebExtensions

Privilege escalation in WebExtensions. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

firefox thunderbird | Remote | Authorization
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
9.8 CRITICAL
CVE-2026-16395 — Integer overflow in the Audio/Video component

Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 22, 2026
Jul 21, 2026
Jul 22, 2026
9.1 CRITICAL
CVE-2026-16394 — Mitigation bypass in the DOM: Security component

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

firefox thunderbird | Remote | Misconfiguration
Jul 21, 2026 Jul 22, 2026
Jul 21, 2026
Jul 22, 2026
9.1 CRITICAL
CVE-2026-16393 — 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.

firefox thunderbird | Remote | Memory Corruption
Jul 21, 2026 Jul 24, 2026
Jul 21, 2026
Jul 24, 2026
Showing 20 of 10032 Results