Overview
A significant security vulnerability, identified as CVE-2025-8890, has been discovered in SDMC NE6037 routers. This vulnerability allows an attacker, with administrative access, to execute arbitrary shell commands due to a command injection flaw within the router’s network diagnostics tool. This issue affects firmware versions prior to 7.1.12.2.44.
Technical Details
CVE-2025-8890 stems from insufficient input validation within the network diagnostics tool embedded in the SDMC NE6037 router’s firmware. An authenticated attacker, who has successfully logged into the router’s administrative portal (typically accessible via LAN), can inject malicious shell commands through the tool’s parameters. These injected commands are then executed by the system, potentially granting the attacker full control over the compromised router.
The vulnerability exists because the router’s firmware fails to properly sanitize user-supplied input to the network diagnostic tool. This tool likely allows for ping or traceroute functionality. By injecting shell commands into the target IP address field or other similar parameters, an attacker can leverage the router’s system privileges to execute arbitrary code.
CVSS Analysis
Currently, a CVSS score is not available (N/A) for CVE-2025-8890. However, considering the potential for complete system compromise, the vulnerability is likely to be classified as high severity. The need for prior authentication and LAN access mitigates the severity somewhat compared to remotely exploitable flaws. When a CVSS score is calculated it is likely to be in the “High” to “Critical” range depending on exploitability details.
Possible Impact
The successful exploitation of CVE-2025-8890 can have serious consequences:
- Complete Router Compromise: Attackers can gain full control over the router, allowing them to modify settings, intercept network traffic, and install malicious software.
- Data Theft: Sensitive data transmitted through the router could be intercepted and stolen.
- Malware Distribution: The compromised router could be used as a platform to distribute malware to other devices on the network.
- Botnet Recruitment: The router could be added to a botnet, participating in distributed denial-of-service (DDoS) attacks or other malicious activities.
- Network Disruption: Attackers can disrupt network services by altering router configurations or launching attacks from the router itself.
Mitigation and Patch Steps
To protect against CVE-2025-8890, users of SDMC NE6037 routers are strongly advised to take the following steps:
- Upgrade Firmware: Immediately update the router’s firmware to version 7.1.12.2.44 or later. This update addresses the command injection vulnerability. Check the SDMC website or router’s admin panel for firmware updates.
- Limit LAN Access: Restrict access to the router’s administrative interface as much as possible. Consider segmenting your network to isolate the router.
- Strong Password: Ensure a strong and unique password is set for the router’s administrative account. Change the default password immediately.
- Regular Monitoring: Monitor the router’s logs for any suspicious activity that could indicate a compromise.
