Fedora 21.x — End of Life
EOL Actively exploitedFedora 21.x reached end of life on Dec 1, 2015, 3979 days ago, and no longer receives security fixes. The most recent release in this series is 21. 5 CVEs are tracked for this series, including 1 critical and 2 actively exploited according to CISA KEV. The next major version is Fedora 22. See Fedora 22 →
Fedora 21.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 21 | Dec 9, 2014 | — | Dec 1, 2015 | 21 | EOL |
CVEs affecting Fedora 21.x (5)
| CVE | Severity | CVSS | EPSS | KEV | Cycle | Description | Published |
|---|---|---|---|---|---|---|---|
| CVE-2015-8036 | MEDIUM | 6.8 | 2.89% | — | 21 | Heap-based buffer overflow in ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SS… | Nov 2, 2015 |
| CVE-2015-5291 | MEDIUM | 6.8 | 3.65% | — | 21 | Heap-based buffer overflow in PolarSSL 1.x before 1.2.17 and ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.… | Nov 2, 2015 |
| CVE-2015-5477 | HIGH | 7.5 | 99.40% | KEV | 21 | named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (… | Jul 29, 2015 |
| CVE-2015-3306 | CRITICAL | 10.0 | 99.49% | KEV | 21 | The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and … | May 18, 2015 |
| CVE-2014-3566 | LOW | 3.4 | 99.99% | — | 21 | The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which mak… | Oct 15, 2014 |
Fedora 21.x is EOL — migrate to Fedora 22.x
Fedora 22.x is the next major release. Plan your upgrade before Fedora 21.x stops receiving security patches.
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[](https://eolcanary.com/explore/fedora/21)Frequently asked questions
Is Fedora 21 end of life?
Yes. All Fedora 21.x releases have reached end of life and no longer receive security patches. There are 5 known CVEs affecting Fedora 21.x, including 1 critical. Migrate to Fedora 22.x as soon as possible.
What CVEs affect Fedora 21?
There are 5 CVEs tracked for Fedora 21.x, including 1 critical severity issue and 2 listed in the CISA Known Exploited Vulnerabilities catalog. See the full list above with CVSS and EPSS scores.
What is the latest Fedora 21 version?
The latest Fedora 21.x patch release is 21, released on December 9, 2014. Always run the latest patch to benefit from all security fixes.
How to migrate from Fedora 21 to Fedora 22?
To migrate from Fedora 21 to Fedora 22: (1) review the official Fedora 22 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 Fedora 21 in production?
No. Fedora 21 has reached end of life and security vulnerabilities are no longer patched. Critically, 2 CVEs affecting Fedora 21.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