The CVE-2025-60551 vulnerability affects the D-Link DIR600L Ax router firmware version FW116WWb01. It is a buffer overflow vulnerability located in the formDeviceReboot function, specifically via the next_page parameter. Buffer overflow vulnerabilities occur when input data exceeds the allocated buffer size, potentially overwriting adjacent memory and allowing attackers to execute arbitrary code or crash the system. In this case, an attacker can send a specially crafted request to the router's management interface targeting the next_page parameter, triggering the overflow. This could lead to remote code execution or denial of service, compromising the device's availability and potentially allowing attackers to pivot into internal networks. The vulnerability does not require authentication, increasing its risk profile, and no user interaction is needed beyond network access to the device. Although no exploits are currently known in the wild and no patches have been released, the vulnerability is publicly disclosed and should be treated as a significant risk. The lack of a CVSS score means severity must be assessed based on the nature of the vulnerability and its potential impact. D-Link DIR600L Ax routers are commonly used in home and small office environments, making this a concern for organizations relying on these devices for network connectivity and security. Attackers exploiting this vulnerability could disrupt network operations or gain unauthorized access, leading to data breaches or further network compromise.

For European organizations, exploitation of CVE-2025-60551 could result in significant operational disruption and security breaches. The affected routers are often deployed in small offices and home office environments, which are increasingly integrated into corporate networks, especially with remote work trends. Successful exploitation could allow attackers to execute arbitrary code on the router, potentially gaining control over network traffic, intercepting sensitive data, or launching further attacks against internal systems. Denial of service attacks could disrupt internet connectivity, impacting business continuity. The lack of authentication requirement and ease of triggering the vulnerability increase the risk of widespread exploitation. Organizations relying on these devices without proper network segmentation or monitoring are particularly vulnerable. The absence of patches means that until firmware updates are available, organizations must rely on network-level mitigations. The impact is heightened in sectors with critical infrastructure or sensitive data, such as finance, healthcare, and government entities within Europe.

1. Immediately identify and inventory all D-Link DIR600L Ax routers in use within the organization. 2. Restrict access to the router management interface by implementing network segmentation and firewall rules that limit access to trusted IP addresses only. 3. Disable remote management features if not required to reduce exposure. 4. Monitor network traffic for unusual or suspicious requests targeting the formDeviceReboot function or the next_page parameter. 5. Employ intrusion detection/prevention systems (IDS/IPS) with updated signatures to detect attempts to exploit this vulnerability. 6. Engage with D-Link support channels to obtain information on forthcoming patches or firmware updates and plan timely deployment once available. 7. Consider replacing vulnerable devices with models that have confirmed security updates if patching is delayed. 8. Educate IT staff about this vulnerability to ensure rapid response to any related incidents. 9. Implement network-level anomaly detection to identify potential exploitation attempts. 10. Maintain regular backups of router configurations to enable quick recovery in case of compromise.