ISC DHCP 4.1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
ISC DHCP 4.1 reached end of life on 5 Oct 2022. It no longer receives security fixes.
1,404 days without security patches
Support timeline
Official dates from the ISC DHCP release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 19 Dec 2008 | — |
| End of life | 5 Oct 2022 | 3.8 years ago |
| Latest release | 4.1-ESV-R16-P2 · 5 Oct 2022 | final |
Frequently asked questions
Is ISC DHCP 4.1 still safe to use?
ISC DHCP 4.1 reached end of life on 5 Oct 2022, 1,404 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download ISC DHCP 4.1?
Yes — the final release (4.1-ESV-R16-P2) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade ISC DHCP 4.1 to?
Upgrade to the newest actively supported ISC DHCP branch.