CVE-2025-15008 identifies a stack-based buffer overflow vulnerability in the Tenda WH450 router firmware version 1.0.0.18. The vulnerability resides in the HTTP request handler component, specifically within the /goform/L7Port endpoint. An attacker can manipulate the 'page' argument in HTTP requests to overflow the stack buffer, potentially overwriting control data such as return addresses. This can lead to arbitrary code execution or cause the device to crash, resulting in denial of service. The vulnerability is remotely exploitable over the network without requiring any authentication or user interaction, increasing its risk profile. The CVSS 4.0 vector indicates low complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and partial impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no public exploits have been observed in the wild, the exploit code has been made public, increasing the likelihood of future attacks. No official patches or mitigations have been published by Tenda at the time of disclosure. The affected device, Tenda WH450, is a consumer-grade wireless router, often deployed in small offices and home environments, but may also be used in small business settings. The vulnerability's exploitation could allow attackers to gain control over the device, intercept or manipulate network traffic, or disrupt network availability.

For European organizations, exploitation of CVE-2025-15008 could lead to significant security risks. Compromise of Tenda WH450 routers could allow attackers to execute arbitrary code, potentially gaining control over network traffic passing through the device. This could result in data interception, modification, or redirection, impacting confidentiality and integrity of sensitive information. Additionally, successful exploitation could cause denial of service by crashing the router, disrupting business operations and network availability. Small and medium enterprises (SMEs) and home office setups using these routers are particularly vulnerable due to typically weaker network defenses. The lack of authentication and user interaction requirements lowers the barrier for attackers, increasing the threat to European networks. Critical infrastructure or organizations relying on these devices for network connectivity may face operational disruptions and increased exposure to further attacks. The public availability of exploit code raises the risk of opportunistic attacks and automated scanning campaigns targeting vulnerable devices across Europe.

European organizations should immediately inventory their network devices to identify any Tenda WH450 routers running firmware version 1.0.0.18. Until an official patch is released, network administrators should implement network-level protections such as restricting access to the router's management interface to trusted IP addresses only, preferably via VPN or internal networks. Deploying web application firewalls (WAFs) or intrusion prevention systems (IPS) with signatures targeting exploitation attempts against /goform/L7Port can help detect and block malicious traffic. Disabling remote management features on the affected devices can reduce exposure. Network segmentation should be enforced to isolate vulnerable devices from critical systems. Monitoring network traffic for unusual patterns or repeated requests to the vulnerable endpoint is recommended. Organizations should subscribe to vendor advisories and CVE databases to apply patches promptly once available. Additionally, consider replacing vulnerable devices with models that have a stronger security track record if patching is delayed.