Is OpenSSL 3.0.21 patched?
Summary iPlain-English security status for OpenSSL 3.0.21, built from its CVEs, active-exploitation data, end-of-life date and latest release.
OpenSSL 3.0.21 is part of the 3.0 release line. No known vulnerabilities affect it in our data. The 3.0 line is supported until 2026-09-07. The latest supported OpenSSL release is 4.0.1.
Known issues affecting 3.0.21
None found for this version. ✓
Other OpenSSL versions
Check another release line of OpenSSL.
Frequently asked
Is OpenSSL 3.0.21 patched?
OpenSSL 3.0.21 is on the latest patch of its cycle with no known affecting vulnerabilities.
When does OpenSSL 3.0 reach end-of-life?
OpenSSL 3.0 is supported until 2026-09-07.
What is the latest version of OpenSSL?
The latest supported OpenSSL release is 4.0.1.
Is OpenSSL 3.0.21 still receiving security updates?
Yes — the 3.0 line is still supported until 2026-09-07 and receiving security updates. The latest release is 4.0.1.
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against OpenSSL's official advisory before you patch or upgrade — OpenSSL official site ↗