Complete end-of-life dates, support windows, and security status for all Umbraco versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 6 | 6.2.6 | Mar 27, 2013 | May 1, 2018 | 2930 days past EOL | EOL |
| 7 LTS | 7.15.11 | Nov 21, 2013 | Sep 30, 2023 | 952 days past EOL | EOL |
| 8 LTS | 8.18.15 | Feb 26, 2019 | Feb 24, 2025 | 439 days past EOL | EOL |
| 9 | 9.5.4 | Sep 29, 2021 | Dec 16, 2022 | 1240 days past EOL | EOL |
| 10 LTS | 10.8.11 | Jun 16, 2022 | Jun 16, 2025 | 327 days past EOL | EOL |
| 11 | 11.5.0 | Dec 1, 2022 | Dec 1, 2023 | 890 days past EOL | EOL |
| 12 | 12.3.10 | Jun 29, 2023 | Jun 29, 2024 | 679 days past EOL | EOL |
| 13 LTS | 13.14.0 | Dec 14, 2023 | Dec 14, 2026 | 219 days remaining | Active |
| 14 | 14.3.4 | May 30, 2024 | May 30, 2025 | 344 days past EOL | EOL |
| 15 | 15.4.4 | Nov 14, 2024 | Nov 14, 2025 | 176 days past EOL | EOL |
| 16 | 16.5.1 | Jun 12, 2025 | Jun 12, 2026 | 34 days remaining | Warning |
| 17 LTS | 17.3.5 | Nov 27, 2025 | Nov 27, 2028 | 933 days remaining | Active |
When a Umbraco version reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the accumulation of unpatched vulnerabilities in EOL software. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no patch will ever exist. This is the most dangerous gap in enterprise security posture.
Organizations running EOL Umbraco should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Upload requirements.txt, package.json, or Gemfile — full EOL report instantly.
Open Stack Scanner →