Ubuntu 11.x — End of Life
EOL Actively exploitedUbuntu 11.x reached end of life on May 9, 2013, 4915 days ago, and no longer receives security fixes. The most recent release in this series is 11.10. 3 CVEs are tracked for this series, including 1 actively exploited according to CISA KEV. 1 of them was published after the end of life of the affected cycle and will not get an official patch. The next major version is Ubuntu 12. See Ubuntu 12 →
Ubuntu 11.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 11.10 | Oct 13, 2011 | May 9, 2013 | May 9, 2013 | 11.10 | EOL | |
| 11.04 | Apr 28, 2011 | Oct 28, 2012 | Oct 28, 2012 | 11.04 | EOL |
CVEs affecting Ubuntu 11.x (5)
| CVE | Severity | CVSS | EPSS | KEV | Cycle | Description | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-31431 | HIGH | 7.8 | 3.43% | KEV | 11.04 | In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-pla… | Apr 22, 2026 |
| CVE-2026-31431 | HIGH | 7.8 | 3.43% | KEV | 11.10 | In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-pla… | Apr 22, 2026 |
| CVE-2013-0335 | HIGH | 7.6 | 2.14% | — | 11.10 | OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gain access t… | Mar 22, 2013 |
| CVE-2011-3389 | MEDIUM | 4.3 | 73.32% | — | 11.04 | The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefo… | Sep 6, 2011 |
| CVE-2011-3389 | MEDIUM | 4.3 | 73.32% | — | 11.10 | The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefo… | Sep 6, 2011 |
Ubuntu 11.x is EOL — migrate to Ubuntu 12.x
Ubuntu 12.x is the next major release. Plan your upgrade before Ubuntu 11.x stops receiving security patches.
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[](https://eolcanary.com/explore/ubuntu/11)Frequently asked questions
Is Ubuntu 11 end of life?
Yes. All Ubuntu 11.x releases have reached end of life and no longer receive security patches. There are 3 known CVEs affecting Ubuntu 11.x. Migrate to Ubuntu 12.x as soon as possible.
What CVEs affect Ubuntu 11?
There are 3 CVEs tracked for Ubuntu 11.x and 1 listed in the CISA Known Exploited Vulnerabilities catalog. See the full list above with CVSS and EPSS scores.
What is the latest Ubuntu 11 version?
The latest Ubuntu 11.x patch release is 11.10, released on October 13, 2011. Always run the latest patch to benefit from all security fixes.
How to migrate from Ubuntu 11 to Ubuntu 12?
To migrate from Ubuntu 11 to Ubuntu 12: (1) review the official Ubuntu 12 migration guide for breaking changes, (2) update dependencies and configuration accordingly, (3) test thoroughly in a staging environment, (4) deploy with a rollback plan. Starting early gives you time to resolve compatibility issues before your current version reaches end of life.
Is it safe to run Ubuntu 11 in production?
No. Ubuntu 11 has reached end of life and security vulnerabilities are no longer patched. Critically, 1 CVE affecting Ubuntu 11.x is in the CISA KEV catalog — meaning it is actively exploited in the wild. Upgrade to a supported version immediately.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA