Accellion Secure File Transfer Appliance before 8_0_105 allows remote authenticated administrators to bypass the restricted shell and execute arbitrary commands via shell metacharacters to the ping command, as demonstrated by modifying the cli program.
Improper Neutralization of Special Elements used in an OS Command The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.