IBM Db2 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes Db2 Connect Server) clpplus command exposes user credentials to the terminal which could be obtained by a third party with physical access to the system.
CWE-359