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 v3.5, the supported versions are:
- v2.7: Current LTS
- v3.4: Prior release
- v3.5: Current release
Please see our Security Vulnerability Reporting page for details on the process.