Firefox 109.x — End of Life
EOLFirefox 109.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 109 | Jan 17, 2023 | — | Feb 14, 2023 | 109.0.1 | EOL |
CVEs affecting Firefox 109.x (0)
Firefox 109.x is EOL — migrate to Firefox 110.x
Firefox 110.x is the next major release. Plan your upgrade before Firefox 109.x stops receiving security patches.
Frequently asked questions
Is Firefox 109 end of life?
Yes. All Firefox 109.x releases have reached end of life and no longer receive security patches. Migrate to Firefox 110.x as soon as possible.
What CVEs affect Firefox 109?
No CVEs are currently tracked for Firefox 109.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Firefox 109 version?
The latest Firefox 109.x patch release is 109.0.1, released on January 31, 2023. Always run the latest patch to benefit from all security fixes.
How to migrate from Firefox 109 to Firefox 110?
To migrate from Firefox 109 to Firefox 110: (1) review the official Firefox 110 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 109 in production?
No. Firefox 109 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