Firefox 146.x — End of Life
EOLFirefox 146.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 146 | Dec 9, 2025 | — | Jan 13, 2026 | 146.0.1 | EOL |
CVEs affecting Firefox 146.x (0)
Firefox 146.x is EOL — migrate to Firefox 147.x
Firefox 147.x is the next major release. Plan your upgrade before Firefox 146.x stops receiving security patches.
Frequently asked questions
Is Firefox 146 end of life?
Yes. All Firefox 146.x releases have reached end of life and no longer receive security patches. Migrate to Firefox 147.x as soon as possible.
What CVEs affect Firefox 146?
No CVEs are currently tracked for Firefox 146.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Firefox 146 version?
The latest Firefox 146.x patch release is 146.0.1, released on December 18, 2025. Always run the latest patch to benefit from all security fixes.
How to migrate from Firefox 146 to Firefox 147?
To migrate from Firefox 146 to Firefox 147: (1) review the official Firefox 147 migration guide for breaking changes, (2) update dependencies and configuration accordingly, (3) test thoroughly in a staging environment, (4) deploy with a rollback plan. Starting early gives you time to resolve compatibility issues before your current version reaches end of life.
Is it safe to run Firefox 146 in production?
No. Firefox 146 has reached end of life and security vulnerabilities are no longer patched. Upgrade to a supported version immediately.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA