CVE-2026-24101 is a command injection vulnerability discovered in the Tenda AC15V1.0 router firmware version V15.03.05.18_multi. The issue exists in the goform/formSetIptv endpoint, where the parameter 's1_1' is passed unchecked into the subroutine sub_B0488, which concatenates this input into a system command execution function named doSystemCmd. Because 's1_1' is not validated or sanitized, an attacker can inject arbitrary shell commands that the router will execute with the privileges of the affected process, likely root or administrative level. This vulnerability can be exploited by sending specially crafted HTTP requests to the router's web management interface. The lack of input validation on this parameter creates a critical security flaw that could allow remote attackers to execute arbitrary commands, leading to full device compromise, data theft, network disruption, or use of the device as a pivot point for further attacks. No CVSS score has been assigned yet, and no public exploits are known, but the vulnerability's nature and affected device type indicate a high risk. The affected firmware version is V15.03.05.18_multi, and no patch or mitigation details have been published at this time. The vulnerability highlights the risks of insufficient input validation in embedded device web interfaces and the importance of secure coding practices in IoT and consumer networking equipment.

The potential impact of CVE-2026-24101 is significant for organizations and individuals using the Tenda AC15V1.0 routers. Successful exploitation can lead to complete compromise of the router, allowing attackers to execute arbitrary commands with administrative privileges. This can result in unauthorized access to internal networks, interception or manipulation of network traffic, disruption of internet connectivity, and deployment of malware or botnets. For enterprises relying on these routers for branch or home office connectivity, this vulnerability could expose sensitive corporate data and provide attackers with a foothold inside the network perimeter. Additionally, compromised routers can be used as launch points for further attacks against other networked systems. The absence of authentication requirements or the presence of default or weak credentials could further ease exploitation. The vulnerability threatens confidentiality, integrity, and availability of network resources and could cause reputational damage and financial loss if exploited at scale.

To mitigate CVE-2026-24101, organizations should first check for firmware updates from Tenda addressing this vulnerability and apply them promptly once available. In the absence of an official patch, administrators should restrict access to the router's web management interface by limiting it to trusted internal networks and disabling remote management features. Implement network segmentation to isolate vulnerable devices from critical assets. Change default credentials to strong, unique passwords to prevent unauthorized access. Monitor network traffic for unusual activity indicative of exploitation attempts. Employ web application firewalls or intrusion detection systems capable of detecting command injection patterns targeting the goform/formSetIptv endpoint. If possible, disable IPTV features or the vulnerable endpoint until a fix is applied. Regularly audit router configurations and logs to detect and respond to suspicious behavior. Finally, consider replacing affected devices with models from vendors with a stronger security track record if timely patches are not forthcoming.