Longhorn 1.5 · Version Status
Longhorn 1.5 End of Life Date
Longhorn 1.5 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Longhorn 1.5 is past end of life. This version no longer receives security patches. 754 days past EOL — migrate to a supported version immediately.
EOL Date
Jul 19, 2024
754 days past EOL
Latest Release
1.5.5
Standard release
Release Date
Jul 7, 2023
Longhorn 1.5 series
Lifecycle detail
Longhorn 1.5 was released on July 7, 2023 and support ended on July 19, 2024 — a supported lifespan of 1 year, shorter than the 1 year and 4 months median for Longhorn releases. The last patch it will ever receive is 1.5.5, published April 19, 2024 — 3 months before support ended. It has been without security patches for 2 years and 1 month. 6 newer Longhorn 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 Longhorn 1.5 support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 1.1 |
1.1.3 |
Apr 23, 2022 |
EOL |
| 1.2 |
1.2.6 |
Oct 6, 2022 |
EOL |
| 1.3 |
1.3.3 |
Aug 11, 2023 |
EOL |
| 1.4 |
1.4.4 |
Mar 13, 2024 |
EOL |
| → 1.5 |
1.5.5 |
Jul 19, 2024 |
EOL |
| 1.6 |
1.6.4 |
Mar 29, 2025 |
EOL |
| 1.7 |
1.7.3 |
Sep 4, 2025 |
EOL |
| 1.8 |
1.8.2 |
Jul 22, 2026 |
EOL |
What does Longhorn 1.5 end of life mean?
When Longhorn 1.5 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 Longhorn 1.5 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Longhorn 1.12 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Longhorn 1.5 reach end of life?
Longhorn 1.5 reached end of life on July 19, 2024. This version is no longer receiving security patches.
Is Longhorn 1.5 still supported?
No. Longhorn 1.5 reached end of life on July 19, 2024 and is no longer receiving security patches.
What should I upgrade to from Longhorn 1.5?
The recommended upgrade from Longhorn 1.5 is
Longhorn 1.12 — the latest actively supported version. Check the
Longhorn full timeline for all supported versions.
What are the security risks of running Longhorn 1.5 past EOL?
When Longhorn 1.5 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 Longhorn should migrate immediately or implement compensating controls.