Umbraco 16 · Version Status
Umbraco 16 End of Life Date
Umbraco 16 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Umbraco 16 is past end of life. This version no longer receives security patches. 11 days past EOL — migrate to a supported version immediately.
EOL Date
Jun 12, 2026
11 days past EOL
Latest Release
16.5.1
Standard release
Release Date
Jun 12, 2025
Umbraco 16 series
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Umbraco 16 support is available
Commercial vendors offer security patches beyond EOL — compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 6 |
6.2.6 |
May 1, 2018 |
EOL |
| 7 LTS |
7.15.11 |
Sep 30, 2023 |
EOL |
| 8 LTS |
8.18.15 |
Feb 24, 2025 |
EOL |
| 9 |
9.5.4 |
Dec 16, 2022 |
EOL |
| 10 LTS |
10.8.11 |
Jun 16, 2025 |
EOL |
| 11 |
11.5.0 |
Dec 1, 2023 |
EOL |
| 12 |
12.3.10 |
Jun 29, 2024 |
EOL |
| 13 LTS |
13.14.0 |
Dec 14, 2026 |
Warning |
What does Umbraco 16 end of life mean?
When Umbraco 16 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Umbraco 16 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Umbraco 17 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Umbraco 16 reach end of life?
Umbraco 16 reached end of life on June 12, 2026. This version is no longer receiving security patches.
Is Umbraco 16 still supported?
No. Umbraco 16 reached end of life on June 12, 2026 and is no longer receiving security patches.
What should I upgrade to from Umbraco 16?
The recommended upgrade from Umbraco 16 is
Umbraco 17 — the latest actively supported version. Check the
Umbraco full timeline for all supported versions.
What are the security risks of running Umbraco 16 past EOL?
When Umbraco 16 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Umbraco should migrate immediately or implement compensating controls.