Hello Carsten,
Actually ECC versions are different from SAP ABAP Applications Server Versions and I mixed by mistake the SAP ABAP Applications Server Versions mentioned in PAM (SAP SSO 2.0 SP03) with ECC.
SAP ERP 6.0 (including ECC) runs on NW 7.01, 7.02, 7.03, 7.3, 7.31, 7.4
Secure Login Library supports these NW versions, so the ECC versions mentioned by you are also supported because they run on these NW versions.
Sorry for this misunderstanding!
Best regards,
Donka Dimitrova