April 2020 Security Update
We did release C3414-500-S02K4_P3 firmware update in April 2020, which fixes an issue when using RADIUS after upgrading from a previous secure firmware version. Using the updated configuration converter included in this firmware resolves any potential issues.
There were no vulnerability (CVE) patches released in April 2020.
C3414-500-S02K4_P3 Firmware Update
See the attached release notes for the full details on the enhancements and fixes included in the patch.