Hazelcast Platform 5.1 · Version Status
Hazelcast Platform 5.1 End of Life Date
Hazelcast Platform 5.1 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
⚠
Hazelcast Platform 5.1 is past end of life. This version no longer receives security patches. 883 days past EOL — migrate to a supported version immediately.
EOL Date
Mar 1, 2024
883 days past EOL
Latest Release
5.1.7
Standard release
Release Date
Mar 1, 2022
Hazelcast Platform 5.1 series
Extended Support
Sep 1, 2025
Extended support · ended
Lifecycle detail
Hazelcast Platform 5.1 was released on March 1, 2022 and support ended on March 1, 2024 — a supported lifespan of 2 years, in line with the 2 years median for Hazelcast Platform releases. It was not an LTS release; Hazelcast Platform reserves longer patch windows for its LTS versions. It has been without security patches for 2 years and 5 months. 4 newer Hazelcast Platform 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 Hazelcast Platform 5.1 support is available
Commercial vendors offer security patches beyond EOL. Right now that coverage spans Hazelcast Platform 5.x. Compare your options.
Compare Options →
All Hazelcast Platform Versions
| Version | Latest | EOL Date | Status |
|---|
| 3.12 |
3.12.13 |
Jun 18, 2021 |
EOL |
| 4.1 |
4.1.10 |
Nov 4, 2022 |
EOL |
| 4.2 |
4.2.8 |
Mar 24, 2023 |
EOL |
| 5.0 |
5.0.5 |
Sep 22, 2023 |
EOL |
| → 5.1 |
5.1.7 |
Mar 1, 2024 |
EOL |
| 5.2 |
5.2.5 |
Oct 25, 2024 |
EOL |
| 5.3 |
5.3.8 |
May 19, 2025 |
EOL |
| 5.4 |
5.4.0 |
Apr 15, 2026 |
EOL |
What does Hazelcast Platform 5.1 end of life mean?
When Hazelcast Platform 5.1 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 Hazelcast Platform 5.1 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Hazelcast Platform 5.7 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Hazelcast Platform 5.1 reach end of life?
Hazelcast Platform 5.1 reached end of life on March 1, 2024. This version is no longer receiving security patches.
Is Hazelcast Platform 5.1 still supported?
No. Hazelcast Platform 5.1 reached end of life on March 1, 2024 and is no longer receiving security patches.
What should I upgrade to from Hazelcast Platform 5.1?
The recommended upgrade from Hazelcast Platform 5.1 is
Hazelcast Platform 5.7 — the latest actively supported version. Check the
Hazelcast Platform full timeline for all supported versions.
What are the security risks of running Hazelcast Platform 5.1 past EOL?
When Hazelcast Platform 5.1 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 Hazelcast Platform should migrate immediately or implement compensating controls.