Cilium end of life: end of support by version
CNCF / Isovalent · Development & DevOps
For Cilium by CNCF / Isovalent, patchletter knows 8 support cycles. 5 of them have already ended and receive no more security updates. The current version of Cilium is 1.20.4. The cycles come from the open endoflife.date project, last reconciled on 07/11/2026.
When does support end for which Cilium version?
A cycle is a maintained version line. Where a date is given, support ends on that day. After it the vendor ships no more security updates for that line.
| Cycle | Latest version | End of support | Status |
|---|---|---|---|
| 1.20 | 1.20.4 | no date on record | supported |
| 1.19 | 1.19.10 | no date on record | supported |
| 1.18 | 1.18.16 | no date on record | supported |
| 1.17 | 1.17.18 | 102 days ago | End of Life |
| 1.16 | 1.16.19 | 278 days ago | End of Life |
| 1.15 | 1.15.19 | 467 days ago | End of Life |
| 1.14 | 1.14.19 | 642 days ago | End of Life |
| 1.13 | 1.13.18 | 837 days ago | End of Life |
Which Cilium versions no longer receive security updates?
5 of 8 cycles have ended. If you run one of those lines, the vendor ships you no more patches, not even for critical flaws.
- Cilium 1.171.17.18
- Cilium 1.161.16.19
- Cilium 1.151.15.19
- Cilium 1.141.14.19
- Cilium 1.131.13.18
Where does the EOL data for Cilium come from?
From the open endoflife.date project, which collects vendors' official support commitments. patchletter reconciles the cycles daily; the Cilium data is as of 07/11/2026. In case of doubt the vendor's own lifecycle page applies. patchletter deliberately stores no vendor full texts.
New Cilium versions by email
Tick the product and patchletter reports new releases by email. The update email costs nothing, and one click stops it again. The warning 90, 30 and 7 days before support ends is part of patchletter Pro.