Umbraco 15 · Version Status
Umbraco 15 End of Life Date
Umbraco 15 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
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Umbraco 15 is past end of life. This version no longer receives security patches. 358 days past EOL — migrate to a supported version immediately.
EOL Date
Nov 14, 2025
358 days past EOL
Latest Release
15.4.4
Standard release
Release Date
Nov 14, 2024
Umbraco 15 series
Where these dates come from
End of lifeNov 14, 2025endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees End of active supportAug 14, 2025endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees ReleaseNov 14, 2024endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees Confidence: high = two or more independent sources agree (the vendor's page read by our adapter, a person's check against the vendor, the dataset the date came from); medium = one; low = the vendor page disagrees or our last read is stale.
How we source dates.
Lifecycle detail
Umbraco 15 was released on November 14, 2024 and support ended on November 14, 2025 — a supported lifespan of 1 year, shorter than the 1 year and 3 months median for Umbraco releases. It was not an LTS release; Umbraco reserves longer patch windows for its LTS releases. Its latest release on record is 15.4.4, published July 29, 2025 — 4 months before support ended. It has been past its end-of-life date for 1 year. 2 newer Umbraco releases have shipped since.
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 15 support options
Some vendors and third parties sell security patches beyond end of life; whether one covers this version varies. 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 |
13.16.4 |
Dec 14, 2026 |
Warning |
What does Umbraco 15 end of life mean?
When Umbraco 15 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: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Umbraco 15 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Umbraco 18 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Umbraco 15 reach end of life?
Umbraco 15 reached end of life on November 14, 2025. This version is no longer receiving security patches.
Is Umbraco 15 still supported?
No. Umbraco 15 reached end of life on November 14, 2025 and is no longer receiving security patches.
What should I upgrade to from Umbraco 15?
The recommended upgrade from Umbraco 15 is
Umbraco 18 — the latest actively supported version. Check the
Umbraco full timeline for all supported versions.
What are the security risks of running Umbraco 15 past EOL?
Since Umbraco 15 reached end of life, the maintainers no longer issue security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL Umbraco should migrate immediately or implement compensating controls.