Firefox 155.x — End of Life
Active1 release in this series0 CVEs
Firefox 155.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 155 | Sep 1, 2026 | — | No | 155.0.1 | Active |
CVEs affecting Firefox 155.x (0)
No CVEs tracked for Firefox 155.x.
Frequently asked questions
Is Firefox 155 end of life?
No. Firefox 155.x is still supported. It continues to receive security patches and bug fixes.
What CVEs affect Firefox 155?
No CVEs are currently tracked for Firefox 155.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Firefox 155 version?
The latest Firefox 155.x patch release is 155.0.1, released on September 4, 2026. Always run the latest patch to benefit from all security fixes.
When was Firefox 155 first released?
Firefox 155.0 was initially released on September 1, 2026. See the full version timeline in the table above.
Is it safe to run Firefox 155 in production?
Firefox 155 is still supported and safe for production use. Ensure you are running the latest patch version (155.0.1) to have all security fixes applied.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA