CVE-2025-7192 is a command injection vulnerability identified in the D-Link DIR-645 router, specifically affecting firmware version 1.05B01 and earlier. The vulnerability resides in the ssdpcgi_main function within the /htdocs/cgibin directory of the ssdpcgi component. Command injection flaws allow an attacker to execute arbitrary commands on the underlying operating system by manipulating input parameters that are improperly sanitized before being passed to system-level calls. In this case, the vulnerability can be exploited remotely without requiring user interaction or authentication, as indicated by the CVSS vector (AV:N/AC:L/AT:N/UI:N/PR:L). The exploitability is facilitated by low attack complexity and no user interaction, but it does require low privileges (PR:L), which may mean the attacker needs some limited access or the device is exposed in a way that allows such access. The vulnerability is classified with a CVSS 4.0 base score of 5.3, indicating a medium severity level, reflecting limited impact on confidentiality, integrity, and availability (VC:L/VI:L/VA:L). The affected product, D-Link DIR-645, is no longer supported by the vendor, meaning no official patches or updates are available to remediate this issue. Although no known exploits are currently observed in the wild, the public disclosure of the exploit code increases the risk of future exploitation. The vulnerability could allow attackers to execute arbitrary commands remotely, potentially leading to unauthorized control over the device, network disruption, or pivoting to other internal network resources. Given the device's role as a network router, successful exploitation could compromise network traffic, degrade availability, or facilitate further attacks on connected systems.

For European organizations, the impact of this vulnerability depends largely on the presence and deployment of the affected D-Link DIR-645 routers within their infrastructure. Since the device is a consumer-grade or small office/home office (SOHO) router, organizations using these routers in branch offices or home setups could face risks of unauthorized network access or disruption. Exploitation could lead to interception or manipulation of network traffic, loss of network availability, or use of the compromised router as a foothold for lateral movement within the corporate network. The lack of vendor support and patches exacerbates the risk, as organizations cannot rely on official fixes and must consider device replacement or alternative mitigations. Additionally, the medium severity rating suggests that while the impact is not critical, it is significant enough to warrant attention, especially in environments where network integrity and confidentiality are paramount. European organizations with remote or hybrid workforces using these routers at home may also be indirectly affected, as compromised home routers can serve as entry points into corporate VPNs or networks. The public disclosure of exploit code increases the likelihood of opportunistic attacks targeting vulnerable devices, potentially leading to increased incident response costs and operational disruptions.

Given the absence of vendor patches due to the product being out of support, European organizations should prioritize the following specific mitigation strategies: 1) Inventory and identify all D-Link DIR-645 routers running firmware version 1.05B01 or earlier within their network and remote user environments. 2) Replace affected devices with currently supported routers that receive regular security updates to eliminate the vulnerability. 3) If immediate replacement is not feasible, isolate the vulnerable routers by restricting remote management access, disabling unnecessary services, and implementing strict firewall rules to limit exposure to untrusted networks. 4) Employ network segmentation to minimize the impact of a compromised router, ensuring that critical systems are not directly accessible through the vulnerable device. 5) Monitor network traffic for unusual command execution patterns or signs of compromise related to the ssdpcgi component. 6) Educate users, especially remote workers, about the risks of using unsupported network devices and encourage timely hardware upgrades. 7) Consider deploying intrusion detection or prevention systems (IDS/IPS) with signatures targeting known exploit attempts against this vulnerability. 8) Regularly review and update network device inventories and security policies to prevent reliance on unsupported hardware in the future.