Opnsense 21.1 · Version Status
Opnsense 21.1 End of Life Date
Opnsense 21.1 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Opnsense 21.1 is past end of life. This version no longer receives security patches. 1751 days past EOL — migrate to a supported version immediately.
EOL Date
Jul 23, 2021
1751 days past EOL
Latest Release
21.1.9
Standard release
Release Date
Jan 26, 2021
Opnsense 21.1 series
| Version | Latest | EOL Date | Status |
|---|
| 15.1 |
15.1.12 |
Jul 2, 2015 |
EOL |
| 15.7 |
15.7.25 |
Jan 28, 2016 |
EOL |
| 16.1 |
16.1.20 |
Jul 26, 2016 |
EOL |
| 16.7 |
16.7.14 |
Jan 27, 2017 |
EOL |
| 17.1 |
17.1.11 |
Jul 26, 2017 |
EOL |
| 17.7 |
17.7.12 |
Jan 26, 2018 |
EOL |
| 18.1 |
18.1.13 |
Jul 29, 2018 |
EOL |
| 18.7 |
18.7.10 |
Jan 28, 2019 |
EOL |
What does Opnsense 21.1 end of life mean?
When Opnsense 21.1 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Opnsense 21.1 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Opnsense 26.1 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Opnsense 21.1 reach end of life?
Opnsense 21.1 reached end of life on July 23, 2021. This version is no longer receiving security patches.
Is Opnsense 21.1 still supported?
No. Opnsense 21.1 reached end of life on July 23, 2021 and is no longer receiving security patches.
What should I upgrade to from Opnsense 21.1?
The recommended upgrade from Opnsense 21.1 is
Opnsense 26.1 — the latest actively supported version. Check the
Opnsense full timeline for all supported versions.
What are the security risks of running Opnsense 21.1 past EOL?
When Opnsense 21.1 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Opnsense should migrate immediately or implement compensating controls.