Step 1. Download the latest patch bundle from link. Patches are cumulative.
Each patch bundle (.zip archive) includes all the updates from prior patches.
Step 2. Upload the patch zip to a datastore.
Step 3. Enable SSH
In the vSphere Web client start the SSH service and make a SSH session to the ESXi host
Step 4. Put the host in maintenance mode
Step 5. Install the patch bundle
esxcli software vib update -d /vmfs/volumes/datastore/patchbundle.zip
After the patch bundle is installed check the message. It must say “The update completed successfully, but the system needs to be rebooted for changes to be effective.”
Step 6. Reboot the host by entering the following command:
Step 7. Make a SSH session to the ESXi host and exit maintenance mode