AIX 4.3.3 through AIX 5.1, when direct remote login is disabled, displays a different message if the password is correct, which allows remote attackers to guess the password via brute force methods.
Buffer overflow in the diagnostics library in AIX allows local users to "cause data and instructions to be overwritten" via a long DIAGNOSTICS environment variable.
Buffer overflow in rpc.yppasswdd (yppasswd server) in AIX allows attackers to gain unauthorized access via a long string. NOTE: due to lack of details in the vendor advisory, it is not clear if this is the same issue as CVE-2001-0779.