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Ubuntu 26.04 is the newest actively maintained release. 5 of 44 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is 18.04, on May 31, 2023.

Latest version

26.04

Apr 23, 2026

Actively maintained cycles

3

of 44 tracked

Total cycles tracked

44

since Oct 20, 2004

How Ubuntu versioning, EOL & security support work

Ubuntu uses date-based versioning in the form YY.MM (year and month of release), with new releases every six months in April and October. Every two years one of those releases is designated Long Term Support (LTS), while the releases in between are short-lived interim releases with a much shorter free support window. Canonical builds Ubuntu Pro around extending security coverage for LTS releases well beyond the free baseline.

Actively maintained (standard free support)

For LTS releases this is Canonical's standard, no-cost maintenance window, during which the Main and Universe repositories get routine security patches, bug fixes, and updates. Interim releases get a much shorter free support window.

Security support only (Extended Security Maintenance / Ubuntu Pro)

Once an LTS release's standard free window ends, Canonical can keep issuing security-only patches for a longer period through Ubuntu Pro's Extended Security Maintenance (ESM). No new features or non-security bug fixes are included in this phase.

End of life

Once a release passes the end of its standard window, and any ESM coverage it's enrolled in, Canonical stops shipping any updates, security or otherwise, for that release.

Ubuntu vulnerabilities are tracked and patched by Canonical's security team, published as USNs (Ubuntu Security Notices) for releases still supported. Once a release reaches end of life, it stops receiving USN-driven patches entirely, so running an EOL Ubuntu version means known CVEs go unfixed unless the system is enrolled in Extended Security Maintenance.

Sources: Ubuntu release cycle, Ubuntu Expanded Security Maintenance

Release lifecycle

Actively maintainedSecurity support onlyEnd of life
Today
26.04Latest
26.04 · Apr 23, 2026
25.10
EOL Jul 1, 2026
25.04
EOL Jan 17, 2026
24.10
EOL Jul 10, 2025
24.04
24.04.4 · Feb 12, 2026
23.10
EOL Jul 12, 2024
23.04
EOL Jan 20, 2024
22.10
EOL Jul 20, 2023
22.04
22.04.5 · Sep 12, 2024
21.10
EOL Jul 14, 2022
21.04
EOL Jan 20, 2022
20.10
EOL Jul 22, 2021
20.04
EOL May 31, 2025
19.10
EOL Jul 6, 2020
19.04
EOL Jan 23, 2020
18.10
EOL Jul 18, 2019
18.04
EOL May 31, 2023
17.10
EOL Jul 19, 2018
17.04
EOL Jan 13, 2018
16.10
EOL Jul 20, 2017
16.04
EOL Apr 2, 2021
15.10
EOL Jul 28, 2016
15.04
EOL Feb 4, 2016
14.10
EOL Jul 23, 2015
14.04
EOL Apr 2, 2019
13.10
EOL Jul 17, 2014
13.04
EOL Jan 27, 2014
12.10
EOL May 16, 2014
12.04
EOL Apr 28, 2017
11.10
EOL May 9, 2013
11.04
EOL Oct 28, 2012
10.10
EOL Apr 10, 2012
10.04
EOL May 9, 2013
9.10
EOL Apr 30, 2011
9.04
EOL Oct 23, 2010
8.10
EOL Apr 30, 2010
8.04
EOL May 9, 2013
7.10
EOL Apr 18, 2009
7.04
EOL Oct 19, 2008
6.10
EOL Apr 26, 2008
6.06
EOL Jun 1, 2011
5.10
EOL Apr 13, 2007
5.04
EOL Oct 31, 2006
4.10
EOL Apr 30, 2006
2005200620072008200920102011201220132014201520162017201820192020202120222023202420252026

Data sourced from endoflife.date.

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