Cilium 1.15 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Cilium 1.15 reached end of life on 29 Jul 2025. It no longer receives security fixes.
376 days without security patches
Recommended action: upgrade to Cilium 1.20. Check your versioncilium version
Support timeline
Official dates from the Cilium release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 31 Jan 2024 | — |
| End of life | 29 Jul 2025 | 1.0 years ago |
| Latest release | 1.15.19 · 16 Jul 2025 | final |
Where to go from 1.15
Recommended target: Cilium 1.20.
The newest actively supported branch is Cilium 1.20 (latest release 1.20.0).
Frequently asked questions
Is Cilium 1.15 still safe to use?
Cilium 1.15 reached end of life on 29 Jul 2025, 376 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Cilium 1.15?
Yes — the final release (1.15.19) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Cilium 1.15 to?
Upgrade to Cilium 1.20, the newest actively supported branch.