CVE-2025-15010 is a stack-based buffer overflow vulnerability identified in the Tenda WH450 router firmware version 1.0.0.18. The vulnerability arises from improper handling of the 'page' parameter in the /goform/SafeUrlFilter endpoint. When an attacker sends a specially crafted request manipulating this parameter, it causes a stack buffer overflow, potentially allowing arbitrary code execution on the device. This vulnerability is remotely exploitable over the network without requiring any authentication or user interaction, making it highly dangerous. The buffer overflow can compromise the device's confidentiality, integrity, and availability by enabling attackers to execute malicious payloads, disrupt router operations, or pivot into internal networks. The vulnerability was publicly disclosed on December 22, 2025, with a CVSS 4.0 base score of 9.3, reflecting its critical nature. No patches have been officially released yet, and although no known exploits are reported in the wild, the public disclosure of exploit code increases the likelihood of imminent attacks. The affected product, Tenda WH450, is a consumer-grade wireless router commonly used in residential and small office environments, which may expose a broad user base to risk. The lack of authentication and user interaction requirements further exacerbates the threat, as attackers can scan and exploit vulnerable devices directly over the internet or local networks. This vulnerability underscores the importance of timely firmware updates and network segmentation to protect critical infrastructure and user privacy.

The impact of CVE-2025-15010 is severe for organizations and individuals using the Tenda WH450 router version 1.0.0.18. Successful exploitation allows remote attackers to execute arbitrary code with the highest privileges on the device, potentially leading to full compromise of the router. This can result in interception or manipulation of network traffic, unauthorized access to internal networks, disruption of internet connectivity, and use of the device as a foothold for further attacks. Confidential information passing through the router can be exposed or altered, undermining data integrity and privacy. The availability of the network can be disrupted by crashing or destabilizing the router. Since the vulnerability requires no authentication or user interaction, attackers can automate scanning and exploitation at scale, increasing the risk of widespread attacks. Organizations relying on these routers for critical connectivity or security functions may face operational disruptions, data breaches, and reputational damage. The lack of an official patch at the time of disclosure further elevates the risk, necessitating immediate mitigation efforts to prevent exploitation.

To mitigate CVE-2025-15010, organizations and users should take the following specific actions: 1) Immediately isolate affected Tenda WH450 devices from untrusted networks, especially the internet, to reduce exposure. 2) Monitor vendor communications closely for official firmware updates or patches addressing this vulnerability and apply them promptly once available. 3) Implement network-level protections such as firewall rules to block inbound traffic to the /goform/SafeUrlFilter endpoint or restrict access to trusted IP addresses only. 4) Employ intrusion detection/prevention systems (IDS/IPS) with signatures targeting this vulnerability or exploit attempts to detect and block malicious traffic. 5) Consider replacing vulnerable devices with routers from vendors with strong security track records if patches are delayed or unavailable. 6) Conduct regular network scans to identify exposed Tenda WH450 devices and remediate accordingly. 7) Educate users about the risks and encourage minimizing exposure of management interfaces to external networks. 8) Use network segmentation to limit the impact of a compromised router on critical internal systems. These targeted measures go beyond generic advice by focusing on immediate containment, proactive monitoring, and reducing attack surface until a patch is deployed.