Microsoft Publisher 2003 SP3 does not properly handle NULL values for unspecified data items, which allows remote attackers to execute arbitrary code via a crafted Publisher file, aka "Publisher Incorrect NULL Value Handling Vulnerability."
Improper Control of Generation of Code The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.