4mosan Security Technology - 4mosan Gcb Doctor - CRITICAL - CVE-2026-78211. The GCB Doctor application by 4MOSAn Security Technology is susceptible to an OS Command Injection vulnerability. This flaw allows unauthenticated remote attackers to inject and execute arbitrary system commands via an unfiltered ADOdb test page parameter. Exploiting this vulnerability could lead to significant security breaches, including unauthorized access and system compromise.