CVE-2026-78211 in 4MOSAn GCB Doctor
Summary
by MITRE • 08/24/2026
4MOSAn GCB Doctor developed by 4MOSAn Security Technology has a OS Command Injection vulnerability. Unauthenticated remote attackers can inject malicious commands through an unremoved ADOdb test page parameter, thereby executing arbitrary system commands on the server.
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Analysis
by VulDB Data Team • 08/24/2026
The vulnerability identified in 4MOSAn GCB Doctor represents a critical security flaw rooted in improper input validation and the retention of legacy administrative interfaces. Specifically, this is an OS Command Injection issue that allows unauthenticated remote attackers to execute arbitrary system commands directly on the affected server. The root cause lies within an ADOdb test page parameter that was not properly removed or secured during previous development or maintenance cycles. This oversight leaves a direct pathway for malicious actors to interact with the underlying operating system, bypassing any intended application-level access controls due to the unauthenticated nature of the exploit vector.
From a technical perspective, this vulnerability falls under CWE-78 Improper Neutralization of Special Elements used in an OS Command, commonly known as OS Command Injection. The presence of an ADOdb test page suggests that debugging or diagnostic code was left active in a production environment. Such pages often accept raw input parameters to facilitate database connectivity testing but fail to sanitize these inputs before passing them to system shell commands. When an attacker supplies crafted input containing command separators such as semicolons, pipes, or ampersands, the application processes this data without adequate validation, leading to the execution of unintended operating system commands with the privileges of the web server process.
The operational impact of this vulnerability is severe and potentially catastrophic for organizations relying on 4MOSAn GCB Doctor for their operations. Since the attack vector is unauthenticated and remote, any individual with network access to the vulnerable service can exploit it without needing valid credentials. Successful exploitation allows attackers to gain full control over the server hosting the application. This level of compromise enables data exfiltration, installation of persistent backdoors, lateral movement within the internal network, or complete destruction of system integrity by deleting critical files or modifying configurations. The lack of authentication requirements significantly lowers the barrier for entry, making this vulnerability highly susceptible to automated scanning and widespread exploitation in the wild.
In terms of threat modeling, this activity aligns with ATT&CK techniques related to Command and Scripting Interpreter execution, specifically T1059 which covers various scripting languages used by adversaries to execute commands on compromised systems. The use of an unremoved test page also reflects a failure in secure software development lifecycle practices, potentially mapping to CWE-483 Inconsistent Extension Mechanism or general principles regarding the removal of unnecessary functionality found in CWE-611 Improper Restriction of XML External Entity Reference if related data parsing is involved, though primarily it remains a classic injection flaw.
To mitigate this vulnerability, immediate action is required to remove the ADOdb test page and any other diagnostic interfaces from the production environment. Developers must ensure that all legacy code, debug tools, and administrative panels are either removed or strictly secured behind robust authentication mechanisms before deployment. Furthermore, implementing strict input validation and output encoding for all user-supplied data can prevent command injection attempts even if similar flaws exist elsewhere in the application stack. Organizations should also conduct a comprehensive audit of their web applications to identify any other retained test pages or unused endpoints that could serve as alternative attack vectors. Regular security assessments and code reviews are essential to maintain a secure posture and ensure that development artifacts do not persist into production environments where they can be exploited by malicious actors.