Mozilla known exploited vulnerabilities
CISA's Known Exploited Vulnerabilities catalog lists 13 Mozilla vulnerabilities: 0 added in the last 365 days, 4 rated critical (CVSS 9 or higher), and 1 with known ransomware use. The most recent was added Oct 6, 2025.
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| Added to KEV | CVE | Vulnerability | CVSS | EPSS | Federal due date | Ransomware use |
|---|---|---|---|---|---|---|
| 2025-10-06 | CVE-2010-3765 | Mozilla Multiple Products Remote Code Execution Vulnerability | 9.8 (v3.1) | 83.2% | 2025-10-27 | Unknown |
| 2024-10-15 | CVE-2024-9680 | Mozilla Firefox Use-After-Free Vulnerability | 9.8 (v3.1) | 23.2% | 2024-11-05 | Known |
| 2023-06-22 | CVE-2016-9079 | Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability | 7.5 (v3.1) | 87.4% | 2023-07-13 | Unknown |
| 2022-05-25 | CVE-2015-4495 | Mozilla Firefox Security Feature Bypass Vulnerability | 8.8 (v3.1) | 68.6% | 2022-06-15 | Unknown |
| 2022-05-23 | CVE-2019-11707 | Mozilla Firefox and Thunderbird Type Confusion Vulnerability | 8.8 (v3.1) | 38.0% | 2022-06-13 | Unknown |
| 2022-05-23 | CVE-2019-11708 | Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability | 10 (v3.1) | 55.9% | 2022-06-13 | Unknown |
| 2022-03-28 | CVE-2013-1690 | Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability | 8.8 (v3.1) | 69.0% | 2022-04-18 | Unknown |
| 2022-03-07 | CVE-2022-26485 | Mozilla Firefox Use-After-Free Vulnerability | 8.8 (v3.1) | 14.3% | 2022-03-21 | Unknown |
| 2022-03-07 | CVE-2022-26486 | Mozilla Firefox Use-After-Free Vulnerability | 9.6 (v3.1) | 2.4% | 2022-03-21 | Unknown |
| 2022-03-03 | CVE-2013-1675 | Mozilla Firefox Information Disclosure Vulnerability | 6.5 (v3.1) | 6.7% | 2022-03-24 | Unknown |
| 2021-11-03 | CVE-2019-17026 | Mozilla Firefox And Thunderbird Type Confusion Vulnerability | 8.8 (v3.1) | 46.3% | 2022-05-03 | Unknown |
| 2021-11-03 | CVE-2020-6819 | Mozilla Firefox And Thunderbird Use-After-Free Vulnerability | 8.1 (v3.1) | 3.0% | 2022-05-03 | Unknown |
| 2021-11-03 | CVE-2020-6820 | Mozilla Firefox And Thunderbird Use-After-Free Vulnerability | 8.1 (v3.1) | 7.1% | 2022-05-03 | Unknown |