Mozilla Firefox vulnerabilities
3,445 published vulnerabilities in Mozilla Firefox, 15 of them exploited in the wild. The most were published in 2026 (558), and 558 so far in 2026.
Mozilla Firefox vulnerabilities by year
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Most exploited Mozilla Firefox vulnerabilities
- CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape
- CVE-2024-9680 Mozilla Firefox Use-After-Free
- CVE-2010-3765 Mozilla Multiple Products Remote Code Execution
- CVE-2022-26486 Mozilla Firefox Use-After-Free
- CVE-2023-5217 Google Chromium libvpx Heap Buffer Overflow
- CVE-2023-4863 Google Chromium WebP Heap-Based Buffer Overflow
- CVE-2022-26485 Mozilla Firefox Use-After-Free
- CVE-2019-17026 Mozilla Firefox And Thunderbird Type Confusion
- CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion
- CVE-2015-4495 Mozilla Firefox Security Feature Bypass
- CVE-2013-1690 Mozilla Firefox and Thunderbird Denial-of-Service
- CVE-2020-6819 Mozilla Firefox And Thunderbird Use-After-Free
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