Umbraco CMS 6 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Umbraco CMS 6 reached end of life on 1 May 2018. It no longer receives security fixes.
Support timeline
Official dates from the Umbraco CMS release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 27 Mar 2013 | 13y 6mo ago |
| Security ended | 1 May 2018 | 8y 5mo ago |
| Latest release | 6.2.6 · 3 Mar 2016 | final |
Where to go from 6
Recommended target: Umbraco CMS 18 (supported until 25 Jun 2027).
The newest actively supported branch is Umbraco CMS 18 (latest release 18.2.0).
Frequently asked questions
Is Umbraco CMS 6 still safe to use?
Umbraco CMS 6 reached end of life on 1 May 2018, 3,079 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Umbraco CMS 6?
Yes — the final release (6.2.6) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Umbraco CMS 6 to?
Upgrade to Umbraco CMS 18, the newest actively supported branch (supported until 25 Jun 2027).