I've never seen one, and there isn't likely to be much demand for NTLM support since Win2k/Active Directory itself speaks LDAP and is easy to support that way. FWIW, Horde groupware claims to support Kerberos, but most just use SQL or LDAP.
The recommanded configuration would be to create your user accounts in LDAP with the schema entries for Samba, and link Samba to the LDAP server. Your CMS would then also link to the LDAP server. Sorry