CVE-2026-2152 is an OS command injection vulnerability identified in the D-Link DIR-615 router firmware version 4.10, specifically within the adv_routing.php component of the web configuration interface. The vulnerability arises when an attacker manipulates input parameters such as dest_ip, submask, or gw, which are improperly sanitized before being passed to system commands. This flaw allows an unauthenticated remote attacker with high privileges (likely authenticated admin access) to execute arbitrary operating system commands on the device. The vulnerability does not require user interaction and can be triggered remotely over the network. The affected product is no longer supported by D-Link, meaning no official patches or firmware updates are available to remediate the issue. The CVSS v4.0 score is 8.6 (high), reflecting the vulnerability's potential to compromise device confidentiality, integrity, and availability. Although no active exploitation has been reported, the public disclosure of exploit code increases the risk of future attacks. The vulnerability could enable attackers to take full control of the router, manipulate network traffic, deploy malware, or pivot to internal networks. The lack of vendor support complicates mitigation efforts, increasing the threat to organizations still relying on this hardware.

The impact of CVE-2026-2152 is significant for organizations and individuals using the affected D-Link DIR-615 routers. Successful exploitation can lead to full remote compromise of the router, allowing attackers to execute arbitrary commands with high privileges. This can result in interception or redirection of network traffic, disruption of internet connectivity, deployment of persistent malware, and potential lateral movement into internal networks. Confidential information passing through the router could be exposed or altered, undermining data integrity and privacy. The vulnerability also threatens network availability by enabling denial-of-service conditions through malicious commands. Since the affected devices are no longer supported, organizations cannot rely on vendor patches, increasing the risk of prolonged exposure. Small businesses and residential users who continue to use these legacy devices are particularly vulnerable, as they may lack advanced security monitoring and incident response capabilities. The overall risk is elevated by the public availability of exploit code, which lowers the barrier for attackers to leverage this vulnerability.

Given the absence of official patches for the unsupported D-Link DIR-615 devices, organizations must adopt alternative mitigation strategies. First, immediate replacement of affected routers with supported, updated hardware is the most effective long-term solution. Until replacement is feasible, disable remote management interfaces to prevent external exploitation. Restrict access to the router’s web configuration interface to trusted internal networks only, using network segmentation and firewall rules. Employ strong authentication mechanisms and change default credentials to reduce the risk of unauthorized access. Monitor network traffic for unusual patterns that may indicate exploitation attempts. If possible, isolate legacy devices from critical infrastructure to limit potential lateral movement. Regularly audit and inventory network devices to identify any remaining vulnerable routers. Educate users about the risks of using unsupported hardware and encourage timely upgrades. Finally, consider deploying network intrusion detection systems capable of identifying command injection attempts targeting router management interfaces.