The universal protocol implementation in Sixnet UDR before 2.0 and RTU firmware before 4.8 allows remote attackers to execute arbitrary code; read, modify, or create files; or obtain file metadata via function opcodes.
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.