CVE-2026-56808 in DGM3103SCT
Summary
by MITRE • 06/30/2026
DGM3103SCT provided by AVTECH Security Corporation contains an OS command injection vulnerability, which may lead to arbitrary command execution with the root privilege by a user who can log in to the web management console of the affected product.
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Analysis
by VulDB Data Team • 06/30/2026
The DGM3103SCT network security device manufactured by AVTECH Security Corporation presents a critical operating system command injection vulnerability that represents a significant threat to network infrastructure security. This vulnerability exists within the web management console interface of the device, creating an attack vector that allows authenticated users to execute arbitrary commands with root privileges. The flaw fundamentally compromises the device's security model by enabling privilege escalation through legitimate administrative access points.
This command injection vulnerability stems from insufficient input validation and sanitization within the web application layer of the DGM3103SCT firmware. When user-supplied parameters are directly incorporated into system commands without proper escaping or filtering mechanisms, attackers can inject malicious payloads that get executed by the underlying operating system. The vulnerability maps to CWE-77 which specifically addresses improper neutralization of special elements used in OS commands, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter. The device's failure to properly validate or sanitize web form inputs, API parameters, or URL variables creates an exploitable path where crafted payloads can bypass authentication checks and execute system-level operations.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass complete system compromise and potential network-wide damage. An authenticated attacker with access to the web management console can leverage this vulnerability to execute arbitrary commands as the root user, effectively granting them full administrative control over the device. This includes the ability to modify firewall rules, alter network configurations, install malicious software, or exfiltrate sensitive data from the device. The root privilege execution capability means that attackers can potentially use the compromised device as a pivot point for lateral movement within the network, as the device may serve as a gateway or bridge between different network segments.
Security professionals should immediately implement mitigations including restricting physical and network access to the affected devices, enforcing strict access controls for web management console logins, and applying firmware updates from AVTECH as soon as they become available. Network segmentation and monitoring of administrative access logs can help detect potential exploitation attempts. The vulnerability also highlights the importance of secure coding practices such as input validation, output encoding, and the principle of least privilege in embedded network security devices. Organizations should conduct comprehensive vulnerability assessments of all network infrastructure equipment and implement regular firmware update policies to address similar issues in other devices within their environment.
The presence of this vulnerability in a security device specifically designed for network protection creates a particularly concerning scenario where the very tool meant to secure network infrastructure becomes an attack vector for compromise. This represents a failure in the security-by-design principles that should be fundamental to all network security equipment, particularly devices that serve as critical infrastructure components for enterprise and industrial networks. The vulnerability demonstrates how even security-focused hardware can contain fundamental flaws in input processing that undermine its intended protective function.