Ubuntu 23.x — End of Life
EOL Actively exploitedUbuntu 23.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 23.10 | Oct 12, 2023 | Jul 12, 2024 | Jul 12, 2024 | 23.10 | EOL |
| 23.04 | Apr 20, 2023 | Jan 20, 2024 | Jan 20, 2024 | 23.04 | EOL |
CVEs affecting Ubuntu 23.x (2)
| CVE | Severity | CVSS | EPSS | KEV | Cycle | Description | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-31431 | HIGH | 7.8 | 96.27% | KEV | 23.04 | 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 | 96.27% | KEV | 23.10 | In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-pla… | Apr 22, 2026 |
Ubuntu 23.x is EOL — migrate to Ubuntu 24.x
Ubuntu 24.x is the next major release. Plan your upgrade before Ubuntu 23.x stops receiving security patches.
Frequently asked questions
Is Ubuntu 23 end of life?
Yes. All Ubuntu 23.x releases have reached end of life and no longer receive security patches. There are 2 known CVEs affecting Ubuntu 23.x. Migrate to Ubuntu 24.x as soon as possible.
What CVEs affect Ubuntu 23?
There are 2 CVEs tracked for Ubuntu 23.x 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 23 version?
The latest Ubuntu 23.x patch release is 23.10, released on October 12, 2023. Always run the latest patch to benefit from all security fixes.
How to migrate from Ubuntu 23 to Ubuntu 24?
To migrate from Ubuntu 23 to Ubuntu 24: (1) review the official Ubuntu 24 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 23 in production?
No. Ubuntu 23 has reached end of life and security vulnerabilities are no longer patched. Critically, 2 CVEs affecting Ubuntu 23.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