The Zephyr project supports the following versions with security updates:
- The most recent release, and the release prior to that.
- Active LTS releases.
At this time, with the latest release of v4.0, the supported versions are:
- v4.0: Current release
- v3.7: Current LTS
- v3.6: Prior release
- v2.7: Prior LTS
Please see our Security Vulnerability Reporting page for details on the process.