End of life / Debian / 4
End of life
Debian 4 is past end of life.
Security fixes stopped on 15 Feb 2010, 6100 days ago. New vulnerabilities in 4 won’t be fixed.
- Released
- 8 Apr 2007
- Active support
- ended 15 Feb 2010
- Security fixes
- ended 15 Feb 2010
- Latest
- 4.0r9
Upgrade to Debian 13: security fixes until 30 Jun 2030.
Release cycles
Every Debian cycle, at a glance.
Active support means bug fixes and security fixes; after it, security fixes only. Past the end of security support, nothing.
- Active support
- Security fixes only
- Supported
- Ends within 90 days
- Ended
Cycle
Status
Released
Active until
Security until
Latest
What to upgrade to
Go to 13.
13 is the newest supported Debian cycle, with security fixes until 30 Jun 2030.
Before you upgrade
Upgrade one release at a time, after a backup. A fresh server on the new release is often quicker.
How to check your version
Which Debian is this site on?
On the server
Release name
Know before support ends.
Porro reads the PHP, framework and database version from every site and tells you 90 days before support runs out.
Dates from endoflife.date/debian, checked daily · data as of 29 Oct 2026.