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.
Unknown vulnerability in the login program on AIX before 4.0 could allow remote users to specify 100 or more environment variables when logging on, which exceeds the length of a certain string, possibly triggering a buffer overflow.
IBM AIX 4.3.3 and AIX 5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a flood of malformed TCP packets without any flags set, which prevents AIX from releasing the associated memory buffers.
Buffer overflow in Common Desktop Environment (CDE) ToolTalk RPC database server (rpc.ttdbserverd) allows remote attackers to execute arbitrary code via an argument to the _TT_CREATE_FILE procedure.