CVE-2025-60558 is a buffer overflow vulnerability identified in the D-Link DIR600L Ax router firmware version FW116WWb01. The vulnerability exists in the formVirtualServ function, where improper handling of the curTime parameter allows an attacker to overflow a buffer. Buffer overflow vulnerabilities typically enable attackers to overwrite memory, potentially leading to arbitrary code execution or denial of service conditions. This vulnerability does not require authentication or user interaction, increasing its risk profile. The lack of a CVSS score and absence of patches indicate this is a newly disclosed issue, with no public exploit code reported yet. The affected device is a consumer-grade router commonly used in home and small office environments. Exploitation could allow remote attackers to compromise the router, intercept or manipulate network traffic, or disrupt network availability. The vulnerability's presence in a widely deployed router model raises concerns about large-scale impact, especially in environments where these devices are used as primary network gateways without additional security layers.

For European organizations, exploitation of this vulnerability could lead to severe consequences including unauthorized network access, interception of sensitive data, and disruption of network services. Small businesses and home offices relying on the D-Link DIR600L Ax router may experience compromised confidentiality and integrity of communications. The potential for remote code execution could allow attackers to pivot into internal networks, escalating the threat to enterprise environments connected through these routers. Additionally, denial of service attacks could cause operational downtime, impacting business continuity. The lack of patches increases the window of exposure, making timely mitigation critical. Given the router's role as a network gateway, successful exploitation could undermine perimeter defenses and facilitate further attacks on connected systems.

1. Immediately identify and inventory all D-Link DIR600L Ax routers running firmware FW116WWb01 within the network. 2. Disable remote management interfaces (e.g., WAN-side web administration) to reduce exposure. 3. Segment networks to isolate vulnerable routers from critical infrastructure and sensitive data. 4. Monitor network traffic for unusual patterns or attempts to exploit the curTime parameter, using IDS/IPS signatures or custom detection rules. 5. Apply strict firewall rules to restrict inbound access to router management ports. 6. Engage with D-Link support channels to obtain information on forthcoming patches or firmware updates. 7. Consider replacing vulnerable devices with models confirmed to be free of this vulnerability if patching is delayed. 8. Educate users about the risks of using default credentials and encourage strong password policies. 9. Maintain up-to-date backups and incident response plans to quickly recover from potential compromise.