This page lists publicly disclosed CVE vulnerabilities affecting mozilla firefox (linked via NVD CPE). Each row includes severity scores, summaries, and publication dates to help identify and analyze security issues.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| CVE-2026-16412 | Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 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. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | [email protected] | 9.8 | 0.33% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16411 | Memory safety bugs present in Thunderbird 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. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | [email protected] | 9.8 | 0.33% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16408 | Integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | [email protected] | 9.8 | 0.28% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16406 | Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | [email protected] | 9.1 | 0.25% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16405 | Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | [email protected] | 7.5 | 0.26% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16397 | Clickjacking issue in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 153. | [email protected] | 6.5 | 0.18% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16395 | Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | [email protected] | 9.8 | 0.28% | 2026-07-21 | 2026-07-22 |
| CVE-2026-16394 | Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | [email protected] | 9.1 | 0.25% | 2026-07-21 | 2026-07-22 |
| CVE-2026-15719 | We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13. | [email protected] | 5.4 | 0.16% | 2026-07-14 | 2026-07-22 |
| CVE-2026-15718 | We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13. | [email protected] | 4.3 | 0.16% | 2026-07-14 | 2026-07-22 |
| CVE-2026-13356 | A malicious webpage could interrupt a pending navigation by enqueuing a synchronous JavaScript dialog, causing the browser UI to display the destination origin in the address bar while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 152.3. | [email protected] | 6.3 | 0.15% | 2026-07-06 | 2026-07-08 |
| CVE-2026-14241 | Memory safety bugs present in Firefox 152.0.3. 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 152.0.4. | [email protected] | 9.8 | 0.23% | 2026-06-30 | 2026-07-06 |
| CVE-2026-12330 | Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12. | [email protected] | 5.4 | 0.16% | 2026-06-16 | 2026-06-17 |
| CVE-2026-12329 | Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12. | [email protected] | 5.3 | 0.25% | 2026-06-16 | 2026-07-15 |
| CVE-2026-12328 | Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12. | [email protected] | 8.1 | 0.48% | 2026-06-16 | 2026-07-15 |
| CVE-2026-12327 | Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12. | [email protected] | 8.1 | 0.41% | 2026-06-16 | 2026-06-17 |
| CVE-2026-12326 | Memory safety bugs present in Firefox 151 and Thunderbird 151. 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 152 and Thunderbird 152. | [email protected] | 8.1 | 0.29% | 2026-06-16 | 2026-07-14 |
| CVE-2026-12325 | Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12. | [email protected] | 6.5 | 0.24% | 2026-06-16 | 2026-06-17 |
| CVE-2026-12324 | Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12. | [email protected] | 7.3 | 0.22% | 2026-06-16 | 2026-06-17 |
| CVE-2026-12323 | Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. | [email protected] | 5.4 | 0.17% | 2026-06-16 | 2026-06-17 |