IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5.0 - 11.5.9 could allow an instance owner to execute malicious code that escalate their privileges to root due to execution of unnecessary privileges operated at a higher than minimum level.
The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.