CVE-2025-8890 is an OS command injection vulnerability classified under CWE-78, affecting the SDMC NE6037 router firmware versions prior to 7.1.12.2.44. The vulnerability resides in a network diagnostics tool embedded within the router's firmware that improperly neutralizes special characters in user-supplied input, allowing shell command injection. An attacker who can authenticate to the router's administrative portal—which by default is only accessible via LAN ports—can exploit this flaw to execute arbitrary commands on the underlying operating system with elevated privileges. The vulnerability does not require additional user interaction beyond authentication, and the access vector is local network access with high privileges. The CVSS 4.0 base score is 9.3 (critical), reflecting the vulnerability's high impact on confidentiality, integrity, and availability, combined with low attack complexity and no need for user interaction. Although no known exploits are publicly available yet, the potential for severe compromise is significant. The vulnerability could allow attackers to manipulate router configurations, intercept or redirect network traffic, deploy persistent malware, or disrupt network operations. The lack of patch links indicates that a firmware update addressing this issue may be pending or not yet publicly released. The router's default configuration limiting admin access to LAN ports somewhat reduces exposure but does not eliminate risk, especially in environments where internal network security is weak or compromised. This vulnerability highlights the importance of secure coding practices in embedded device diagnostics tools and the need for strict access controls on network management interfaces.

For European organizations, exploitation of CVE-2025-8890 could lead to complete compromise of affected SDMC NE6037 routers, resulting in unauthorized command execution with administrative privileges. This could enable attackers to alter network configurations, intercept sensitive data, launch further attacks within the internal network, or cause denial of service by disrupting router functionality. Critical sectors such as telecommunications, government, finance, and energy that rely on these routers for network connectivity and management could face operational disruptions and data breaches. The vulnerability's requirement for authenticated access limits exposure to internal or otherwise trusted users, but insider threats or lateral movement by attackers who have breached perimeter defenses could leverage this flaw. The high severity and potential for widespread impact necessitate urgent remediation to prevent exploitation that could undermine network security and data confidentiality across European enterprises and public sector entities.

European organizations should immediately verify if SDMC NE6037 routers are deployed within their networks and identify firmware versions in use. They should apply the latest firmware update from SDMC once available, as this vulnerability is fixed in version 7.1.12.2.44 or later. Until patches are deployed, organizations should restrict access to the router's administrative portal by implementing network segmentation to isolate management interfaces from general LAN access, using VLANs or dedicated management networks. Strong authentication mechanisms such as multi-factor authentication should be enforced for router admin access. Monitoring and logging of administrative access attempts should be enhanced to detect suspicious activity. Additionally, organizations should conduct internal network scans to identify unauthorized devices or rogue access points that could facilitate attacker access to the LAN. Regular security audits and penetration testing focusing on internal network security posture will help reduce the risk of exploitation. Finally, educating network administrators about the risks of this vulnerability and best practices for secure router management is critical.