Ubuntu 9.x — End of Life
EOL Actively exploitedUbuntu 9.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 9.10 | Oct 29, 2009 | Apr 30, 2011 | Apr 30, 2011 | 9.10 | EOL |
| 9.04 | Apr 23, 2009 | Oct 23, 2010 | Oct 23, 2010 | 9.04 | EOL |
CVEs affecting Ubuntu 9.x (4)
| CVE | Severity | CVSS | EPSS | KEV | Cycle | Description | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-31431 | HIGH | 7.8 | 96.27% | KEV | 9.10 | 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 | 96.27% | KEV | 9.04 | In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-pla… | Apr 22, 2026 |
| CVE-2009-3555 | CRITICAL | 9.8 | 87.26% | — | 9.10 | The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS… | Nov 9, 2009 |
| CVE-2009-3555 | CRITICAL | 9.8 | 87.26% | — | 9.04 | The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS… | Nov 9, 2009 |
Ubuntu 9.x is EOL — migrate to Ubuntu 10.x
Ubuntu 10.x is the next major release. Plan your upgrade before Ubuntu 9.x stops receiving security patches.
Frequently asked questions
Is Ubuntu 9 end of life?
Yes. All Ubuntu 9.x releases have reached end of life and no longer receive security patches. There are 4 known CVEs affecting Ubuntu 9.x, including 2 critical. Migrate to Ubuntu 10.x as soon as possible.
What CVEs affect Ubuntu 9?
There are 4 CVEs tracked for Ubuntu 9.x, including 2 critical severity issues and 2 listed in the CISA Known Exploited Vulnerabilities catalog. See the full list above with CVSS and EPSS scores.
What is the latest Ubuntu 9 version?
The latest Ubuntu 9.x patch release is 9.10, released on October 29, 2009. Always run the latest patch to benefit from all security fixes.
How to migrate from Ubuntu 9 to Ubuntu 10?
To migrate from Ubuntu 9 to Ubuntu 10: (1) review the official Ubuntu 10 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 9 in production?
No. Ubuntu 9 has reached end of life and security vulnerabilities are no longer patched. Critically, 2 CVEs affecting Ubuntu 9.x are in the CISA KEV catalog — meaning they are 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