CVE-2025-60554 is a buffer overflow vulnerability identified in the D-Link DIR600L Ax router firmware version FW116WWb01. The flaw exists in the formSetEnableWizard function, specifically through improper handling of the curTime 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 craft a malicious request targeting the curTime parameter to trigger the overflow. The vulnerability is significant because it affects the router's firmware, which operates with high privileges and controls network traffic. Exploiting this vulnerability could allow attackers to gain control over the router, intercept or manipulate network traffic, or disrupt network availability. The vulnerability does not require authentication, implying that an attacker with network access to the router's management interface could exploit it remotely. However, no public exploits or patches are currently available, and the affected firmware version is specified, though no other versions are listed. The lack of a CVSS score means the severity must be inferred from the technical details and potential impact. Given the nature of buffer overflows and the critical role of routers in network infrastructure, this vulnerability poses a serious risk to affected devices.

For European organizations, the exploitation of CVE-2025-60554 could lead to severe consequences including unauthorized access to internal networks, interception of sensitive data, and disruption of network services. Small and medium enterprises (SMEs) and residential users relying on the D-Link DIR600L Ax router could be particularly vulnerable due to less stringent network security controls. Compromise of the router could enable attackers to pivot into corporate networks, bypass perimeter defenses, or launch man-in-the-middle attacks. The confidentiality of communications could be compromised, integrity of data altered, and availability of network services disrupted. Given the router's role as a gateway device, the impact extends beyond a single device to the broader network environment. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once the vulnerability becomes widely known. European organizations with limited IT security resources may face challenges in detecting and mitigating exploitation attempts, increasing their exposure.

To mitigate CVE-2025-60554, organizations should first verify if they use the affected D-Link DIR600L Ax firmware version FW116WWb01 and plan for immediate firmware updates once patches are released. Until patches are available, restrict access to the router's management interface by implementing network segmentation and firewall rules that limit access to trusted IP addresses only. Disable remote management features if not required, and enforce strong authentication mechanisms for local access. Monitor network traffic for unusual patterns or repeated malformed requests targeting the router's management interface. Employ intrusion detection or prevention systems capable of detecting buffer overflow attempts. Regularly audit router configurations and maintain an inventory of network devices to ensure timely response to vulnerabilities. Educate users about the risks of exposing router management interfaces to untrusted networks. Consider replacing outdated or unsupported router models with devices that receive regular security updates and have robust security features.