NetBSD 4 End of Life
Support dates and upgrade guidance — rebuilt from live data.
NetBSD 4 is past end of life. The vendor has not published a dated end-of-support announcement for this branch; newer branches have documented dates that are already past.
Recommended action: upgrade to NetBSD 11.Support timeline
Official dates from the NetBSD release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 19 Dec 2007 | — |
| End of life | — | years ago |
| Active support ended | 29 Apr 2009 | security fixes only after this |
| Latest release | 4.0.1 · 14 Oct 2008 | final |
Where to go from 4
Recommended target: NetBSD 11.
The newest actively supported branch is NetBSD 11 (latest release 11.0).
Frequently asked questions
Is NetBSD 4 still safe to use?
NetBSD 4 reached end of life on —, 0 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download NetBSD 4?
Yes — the final release (4.0.1) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade NetBSD 4 to?
Upgrade to NetBSD 11, the newest actively supported branch.