No, Billy and Paolo have won 7 each : 1987/88 (Sacchi), 1991/92, 1992/93, 1993/94, 1995/96 (Capello), 1998/99 (Zac), 2003/04 (Ancelotti).
Had we won the CL this year Maldini would also be one European Cup away from Gento's record (6), and he already has played 7 finals of those, again just one less than record holder Gento.