CVE-2025-60565 is a buffer overflow vulnerability identified in the D-Link DIR600L Ax router firmware version FW116WWb01. The flaw resides in the formSchedule function, specifically through improper handling of the curTime parameter, which allows an attacker to overflow a buffer. Buffer overflow vulnerabilities can lead to arbitrary code execution, potentially allowing attackers to gain control over the device or cause it to crash, resulting in denial of service. The vulnerability was reserved on September 26, 2025, and published on October 24, 2025, but currently lacks a CVSS score and any known exploits in the wild. The affected device, D-Link DIR600L Ax, is a popular router model used primarily in consumer and small office environments. The absence of patches or vendor advisories at this time means the vulnerability remains unmitigated. Exploitation likely requires sending specially crafted requests to the router’s web management interface targeting the formSchedule function’s curTime parameter. Since routers are critical network infrastructure components, successful exploitation could compromise network confidentiality, integrity, and availability. The vulnerability’s impact is heightened by the fact that many such routers are deployed with default or weak credentials and may be exposed to the internet or untrusted networks. Given the widespread use of D-Link routers in Europe, this vulnerability poses a significant risk to home users, SMEs, and possibly larger organizations relying on this hardware for network connectivity and security.

For European organizations, the exploitation of CVE-2025-60565 could lead to unauthorized remote code execution on affected routers, resulting in full compromise of the device. This could allow attackers to intercept, modify, or redirect network traffic, leading to data breaches or man-in-the-middle attacks. Additionally, attackers could disrupt network availability by causing router crashes or reboots, impacting business continuity. The vulnerability is particularly concerning for SMEs and home offices that rely on this router model without advanced security controls. Compromise of these routers could serve as a foothold for lateral movement into corporate networks or as a platform for launching further attacks. The lack of available patches increases the risk window, making proactive network defenses critical. The impact extends beyond individual organizations to ISPs and managed service providers that deploy these routers for their customers, potentially amplifying the scale of exploitation. Overall, the vulnerability threatens confidentiality, integrity, and availability of network communications within affected environments.

1. Immediately restrict access to the router’s management interface by limiting it to trusted internal networks and disabling remote management over the internet. 2. Implement network segmentation to isolate vulnerable routers from critical systems and sensitive data. 3. Monitor network traffic for unusual requests targeting the formSchedule function or the curTime parameter, using IDS/IPS solutions with custom signatures if necessary. 4. Enforce strong authentication and change default credentials on all affected devices to reduce unauthorized access risk. 5. Regularly check for firmware updates or security advisories from D-Link and apply patches promptly once available. 6. Consider replacing vulnerable devices with models that have active security support and better vulnerability management. 7. Educate users and administrators about the risks of exposing router management interfaces and the importance of secure configurations. 8. Employ network-level protections such as firewall rules to block suspicious inbound traffic to router management ports. 9. For managed service providers, conduct audits of deployed devices and implement centralized monitoring for signs of compromise. 10. Maintain backups of router configurations to facilitate rapid recovery in case of compromise or failure.