Is Kotlin 1.6.21 patched?
Current stable (2.4.0): 100/100
Summary iPlain-English security status for Kotlin 1.6.21, built from its CVEs, active-exploitation data, end-of-life date and latest release.
Kotlin 1.6.21 is part of the 1.6 release line. 1 known vulnerability affects it. The 1.6 line reached end-of-life on 2022-06-09, so it no longer receives security patches. The latest supported Kotlin release is 2.4.0.
Known issues affecting 1.6.21
Exploited first, then by exploitation probability.
CVE-2020-29582 MEDIUM EPSS 3% → fixed in 2.1.0Other Kotlin versions
Check another release line of Kotlin.
Frequently asked
Is Kotlin 1.6.21 patched?
Kotlin 1.6.21 is end-of-life and no longer receives security patches. Move to 2.4.0.
When does Kotlin 1.6 reach end-of-life?
Kotlin 1.6 reached end-of-life on 2022-06-09 and no longer receives security patches.
What is the latest version of Kotlin?
The latest supported Kotlin release is 2.4.0.
Is Kotlin 1.6.21 still receiving security updates?
No — Kotlin 1.6.21 is on the 1.6 line, which reached end-of-life on 2022-06-09 and no longer receives security updates. Upgrade to 2.4.0 or later to stay supported.
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against JetBrains's official advisory before you patch or upgrade — Kotlin official site ↗