OpenBSD 4.3 End of Life
Support dates and upgrade guidance — rebuilt from live data.
OpenBSD 4.3 reached end of life on 1 May 2009. It no longer receives security fixes.
Support timeline
Official dates from the OpenBSD release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 1 May 2008 | — |
| End of life | 1 May 2009 | 17.3 years ago |
| Latest release | — | final |
Where to go from 4.3
Recommended target: OpenBSD 7.9 (supported until 1 Jun 2027).
The newest actively supported branch is OpenBSD 7.9 (latest release ).
Frequently asked questions
Is OpenBSD 4.3 still safe to use?
OpenBSD 4.3 reached end of life on 1 May 2009, 6,309 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download OpenBSD 4.3?
Yes — the final release (4.3) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade OpenBSD 4.3 to?
Upgrade to OpenBSD 7.9, the newest actively supported branch (supported until 1 Jun 2027).