Umbraco CMS 12 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Umbraco CMS 12 reached end of life on 29 Jun 2024. It no longer receives security fixes.
Support timeline
Official dates from the Umbraco CMS release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 29 Jun 2023 | — |
| End of life | 29 Jun 2024 | 2.1 years ago |
| Active support ended | 29 Mar 2024 | security fixes only after this |
| Latest release | 12.3.10 · 17 May 2024 | final |
Where to go from 12
Recommended target: Umbraco CMS 18 (supported until 25 Jun 2027).
The newest actively supported branch is Umbraco CMS 18 (latest release 18.1.0).
Frequently asked questions
Is Umbraco CMS 12 still safe to use?
Umbraco CMS 12 reached end of life on 29 Jun 2024, 771 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Umbraco CMS 12?
Yes — the final release (12.3.10) 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 12 to?
Upgrade to Umbraco CMS 18, the newest actively supported branch (supported until 25 Jun 2027).