Question 1

What is the EOL Risk Score for Umbraco 15?

Accepted Answer

Umbraco 15 has an EOL Risk Score™ of 40 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (30/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Umbraco 15 still supported?

Accepted Answer

Umbraco 15 is no longer supported — it has passed its end of life date (November 14, 2025). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Umbraco 15 reach end of life?

Accepted Answer

Umbraco 15 reached (or will reach) end of life on November 14, 2025. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Umbraco 15 after end of life?

Accepted Answer

After end of life, the vendor's standard support for Umbraco 15 ends, so newly discovered vulnerabilities may never be fixed unless a paid extended support option covers that version. Auditors ask about it too: PCI DSS requirement 12.3.4, for example, calls for a yearly review of vendor end-of-life announcements with a remediation plan approved by senior management.