Nextcloud 21 · Version Status
Nextcloud 21 End of Life Date
Nextcloud 21 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Nextcloud 21 is past end of life. This version no longer receives security patches. 1531 days past EOL — migrate to a supported version immediately.
EOL Date
Feb 28, 2022
1531 days past EOL
Latest Release
21.0.9
Standard release
Release Date
Feb 22, 2021
Nextcloud 21 series
| Version | Latest | EOL Date | Status |
|---|
| 9 |
9.1.3 |
Aug 31, 2017 |
EOL |
| 10 |
10.0.6 |
Aug 31, 2017 |
EOL |
| 11 |
11.0.8 |
Mar 31, 2018 |
EOL |
| 12 |
12.0.13 |
Nov 30, 2018 |
EOL |
| 13 |
13.0.12 |
Feb 28, 2019 |
EOL |
| 14 |
14.0.14 |
Sep 30, 2019 |
EOL |
| 15 |
15.0.14 |
Dec 31, 2019 |
EOL |
| 16 |
16.0.11 |
Jun 30, 2020 |
EOL |
What does Nextcloud 21 end of life mean?
When Nextcloud 21 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 Nextcloud 21 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Nextcloud 33 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Nextcloud 21 reach end of life?
Nextcloud 21 reached end of life on February 28, 2022. This version is no longer receiving security patches.
Is Nextcloud 21 still supported?
No. Nextcloud 21 reached end of life on February 28, 2022 and is no longer receiving security patches.
What should I upgrade to from Nextcloud 21?
The recommended upgrade from Nextcloud 21 is
Nextcloud 33 — the latest actively supported version. Check the
Nextcloud full timeline for all supported versions.
What are the security risks of running Nextcloud 21 past EOL?
When Nextcloud 21 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 Nextcloud should migrate immediately or implement compensating controls.