CVE-2025-44179 in CGNF-TWN
Summary
by MITRE • 08/26/2025
Hitron CGNF-TWN 3.1.1.43-TWN-pre3 contains a command injection vulnerability in the telnet service. The issue arises due to improper input validation within the telnet command handling mechanism. An attacker can exploit this vulnerability by injecting arbitrary commands through the telnet interface when prompted for inputs or commands. Successful exploitation could lead to remote code execution (RCE) under the privileges of the telnet user, potentially allowing unauthorized access to system settings and sensitive information.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 08/26/2025
The CVE-2025-44179 vulnerability represents a critical command injection flaw within the Hitron CGNF-TWN router firmware version 3.1.1.43-TWN-pre3, specifically affecting the telnet service implementation. This vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize user-provided data before processing within the telnet command handling framework. The flaw exists in the network infrastructure device's remote access service, creating a significant security risk for organizations relying on this specific router model for their network operations.
The technical exploitation of this vulnerability occurs through the telnet service interface where the system does not adequately validate or escape input parameters received from remote clients. When users interact with the telnet prompt or provide commands through the interface, the system fails to implement proper sanitization measures that would prevent malicious input from being interpreted as executable code. This improper input validation creates a direct pathway for command injection attacks, allowing attackers to execute arbitrary system commands through carefully crafted input sequences. The vulnerability manifests as a classic command injection flaw that can be classified under CWE-77, which specifically addresses command injection vulnerabilities in software systems.
The operational impact of this vulnerability extends beyond simple unauthorized access, as successful exploitation could enable attackers to achieve remote code execution with the privileges of the telnet user account. This privilege level typically provides access to system configuration settings, network parameters, and potentially sensitive information stored within the router's memory. The implications for network security are substantial, as attackers could leverage this vulnerability to establish persistent access points, modify routing tables, intercept network traffic, or use the compromised device as a pivot point for attacking other systems within the network perimeter. The vulnerability affects the fundamental security posture of the affected network infrastructure, potentially compromising the confidentiality, integrity, and availability of connected systems.
Organizations should implement immediate mitigations including disabling the telnet service entirely when not required for administrative purposes, as telnet transmits credentials and commands in plaintext, exacerbating the security risk. Network segmentation strategies should be employed to isolate critical systems from devices running vulnerable firmware versions, while regular firmware updates and security patches should be implemented as soon as vendor advisories become available. The vulnerability aligns with ATT&CK technique T1021.004, which covers remote services through telnet access, and represents a significant concern for cybersecurity frameworks requiring robust network device security controls. Security monitoring should include detection of unusual telnet activity patterns and command execution attempts that may indicate exploitation attempts against this vulnerability.