It indicates a file disclosure vulnerability in DCForum cgforum.cgi program.
DCForum is a web forum software provided by DC Business Solutions. Due to insufficient user input validation, an attacker can read arbitrary files on the victim system by sending it a specially-crafted message.
Any unprotected system running DCForum 1.0 to 6.0 is vulnerable to the attack.
Attackers can read arbitrary files on the victim system or cause Denial-of-Service.
Apply appropriate patches or Upgrade the system to the latest non-vulnerable version.