Firefox 142.x — End of Life
EOLFirefox 142.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 142 | Aug 19, 2025 | — | Sep 16, 2025 | 142.0.1 | EOL |
CVEs affecting Firefox 142.x (0)
Firefox 142.x is EOL — migrate to Firefox 143.x
Firefox 143.x is the next major release. Plan your upgrade before Firefox 142.x stops receiving security patches.
Frequently asked questions
Is Firefox 142 end of life?
Yes. All Firefox 142.x releases have reached end of life and no longer receive security patches. Migrate to Firefox 143.x as soon as possible.
What CVEs affect Firefox 142?
No CVEs are currently tracked for Firefox 142.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Firefox 142 version?
The latest Firefox 142.x patch release is 142.0.1, released on August 27, 2025. Always run the latest patch to benefit from all security fixes.
How to migrate from Firefox 142 to Firefox 143?
To migrate from Firefox 142 to Firefox 143: (1) review the official Firefox 143 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 142 in production?
No. Firefox 142 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