The vulnerability identified as CVE-2025-60557 affects the D-Link DIR600L Ax router firmware version FW116WWb01. It is a buffer overflow vulnerability located in the formSetEasy_Wizard function, specifically triggered via the curTime parameter. Buffer overflow vulnerabilities occur when input data exceeds the allocated buffer size, potentially overwriting adjacent memory and allowing attackers to manipulate program execution flow. In this case, an attacker can send crafted input to the vulnerable parameter, potentially leading to arbitrary code execution or denial of service conditions on the router. The router's firmware does not currently have a public patch or known exploits in the wild, but the vulnerability has been officially published and reserved by MITRE as of late September 2025. The lack of a CVSS score indicates that the vulnerability is newly disclosed and not yet fully assessed, but the nature of buffer overflows in network-facing devices typically implies a high risk. The affected device is a consumer-grade router widely used in home and small office environments, which often have less stringent security controls. Exploitation likely requires network access to the device's management interface, which may be exposed internally or externally depending on configuration. The vulnerability could allow attackers to gain control over the router, intercept or manipulate network traffic, or disrupt network availability. The absence of authentication requirements for triggering the vulnerability increases its risk profile. No patches or mitigations have been officially released yet, so organizations must rely on network-level controls and monitoring to reduce exposure.

For European organizations, this vulnerability poses significant risks, especially for small and medium enterprises (SMEs) and home office setups that commonly use consumer-grade routers like the D-Link DIR600L Ax. Successful exploitation could lead to full compromise of the router, enabling attackers to intercept sensitive communications, redirect traffic, or launch further attacks within the internal network. This could result in data breaches, loss of confidentiality, integrity violations, and network downtime. The potential for denial of service could disrupt business operations, particularly for organizations relying on stable internet connectivity. Since many European countries have a high adoption rate of D-Link routers in residential and small business markets, the threat could be widespread. Additionally, the vulnerability could be leveraged by cybercriminals or state-sponsored actors targeting critical infrastructure or strategic sectors by exploiting less secure network devices at the edge. The lack of a patch and public exploit increases the urgency for proactive defense measures to prevent exploitation.

1. Immediately restrict access to the router's management interface by disabling remote administration features and limiting access to trusted internal IP addresses only. 2. Change default credentials and enforce strong, unique passwords for router administration to prevent unauthorized access. 3. Monitor network traffic for unusual patterns or attempts to access the vulnerable function, using intrusion detection systems or network monitoring tools. 4. Segment networks to isolate vulnerable devices from critical infrastructure and sensitive data environments. 5. Regularly audit network devices to identify the presence of the D-Link DIR600L Ax model and firmware version FW116WWb01. 6. Engage with D-Link support channels to obtain information on upcoming patches or firmware updates and apply them promptly once available. 7. Educate users and administrators about the risks of exposing router management interfaces to the internet and best practices for secure configuration. 8. Consider deploying network-level protections such as firewalls or access control lists to block unauthorized traffic targeting the router's management ports. 9. Prepare incident response plans to quickly address potential exploitation attempts or detected compromises involving this vulnerability.