IBM Informix Dynamic Server (IDS) before 9.40.xC7 and 10.00 before 10.00.xC3 allows local users to cause a denial of service (crash) via unspecified vectors.
IBM Informix Dynamic Server (IDS) before 9.40.xC8 and 10.00 before 10.00.xC4 stores passwords in plaintext in shared memory, which allows local users to obtain passwords by reading the memory (product defects 171893, 171894, 173772).
IBM Informix Dynamic Server (IDS) before 9.40.xC7 and 10.00 before 10.00.xC3 does not use database creation permissions, which allows remote authenticated users to create arbitrary databases.