OpenSSL 4.0 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
OpenSSL 4.0 is actively supported. It reaches end of life on 14 May 2027.
278 days of security support left
4.0.1 latest release
30% of this branch's supported lifetime has elapsed — 14 Apr 2026 → 14 May 2027.
Check your versionopenssl version
Support timeline
Official dates from the OpenSSL release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 14 Apr 2026 | — |
| End of life (scheduled) | 14 May 2027 | in 278 days |
| Latest release | 4.0.1 · 9 Jun 2026 | current |
How much runway a newer branch buys
OpenSSL 4.0 is the newest branch — this is the longest runway currently available.
| Branch | End of life | Days left | vs 4.0 |
|---|---|---|---|
| OpenSSL 4.0 | 14 May 2027 | 278 | this branch |
| OpenSSL 3.6 | 1 Nov 2026 | 84 | -194 days |
| OpenSSL 3.5 | 8 Apr 2030 | 1,338 | +1,060 days |
| OpenSSL 3.4 | 22 Oct 2026 | 74 | -204 days |
| OpenSSL 3.0 | 7 Sept 2026 | 29 | -249 days |
Frequently asked questions
When does OpenSSL 4.0 reach end of life?
OpenSSL 4.0 reaches end of life on 14 May 2027 — 278 days from now. After that date it receives no security fixes.
Is OpenSSL 4.0 still supported?
Yes. OpenSSL 4.0 is currently maintained. Latest release: 4.0.1, published 9 Jun 2026.
What happens when OpenSSL 4.0 reaches end of life?
Security fixes stop. After 14 May 2027 this branch receives no further updates under standard support.
How long do I have to upgrade from OpenSSL 4.0?
278 days. This is already the newest branch, so this is the longest runway currently available.