CVE-2025-56086 is an operating system command injection vulnerability identified in the Ruijie RG-EW1200 wireless router firmware version EW_3.0(1)B11P227_EW1200_11130208RG-EW1200 V1.00. The vulnerability exists in the module_get function located in the /usr/local/lua/dev_sta/networkConnect.lua script, which processes POST requests. An attacker can craft a malicious POST request that injects arbitrary OS commands, which the device executes with the privileges of the affected process. This flaw arises due to insufficient input validation or sanitization of user-supplied data before passing it to system-level command execution functions. Because the vulnerability does not require authentication, any attacker with network access to the device's management interface can exploit it remotely. The absence of a CVSS score and public exploits suggests the vulnerability is newly disclosed, but the potential impact is severe. Successful exploitation could allow attackers to gain full control over the router, manipulate network traffic, intercept or redirect data, and pivot to internal networks. The Ruijie RG-EW1200 is used in various enterprise and service provider environments, making this a significant threat vector. No official patches or mitigations have been published yet, increasing the urgency for defensive measures. The vulnerability's presence in a Lua script indicates the device uses embedded scripting for network connectivity management, which, if compromised, can undermine the device's integrity and availability.

For European organizations, the impact of CVE-2025-56086 could be substantial. Compromise of the Ruijie RG-EW1200 routers could lead to unauthorized access to internal networks, interception of sensitive communications, and disruption of business-critical wireless connectivity. This is particularly concerning for sectors such as finance, healthcare, government, and telecommunications, where network integrity and confidentiality are paramount. Attackers could leverage the vulnerability to establish persistent footholds, exfiltrate data, or launch further attacks within the corporate network. Given the router's role as a network gateway, exploitation could also facilitate man-in-the-middle attacks or denial of service conditions. The lack of authentication requirement broadens the attack surface, especially if devices are exposed to the internet or poorly segmented internal networks. The absence of patches means organizations must rely on network-level controls and monitoring to mitigate risk. Additionally, the vulnerability could undermine trust in Ruijie devices, impacting supply chain security and procurement decisions across Europe.

1. Immediately restrict access to the management interface of the Ruijie RG-EW1200 routers by implementing strict firewall rules and network segmentation to limit exposure to trusted administrators only. 2. Monitor network traffic for unusual POST requests targeting the /usr/local/lua/dev_sta/networkConnect.lua endpoint, using intrusion detection systems (IDS) or web application firewalls (WAF) capable of detecting command injection patterns. 3. Engage with Ruijie Networks to obtain official patches or firmware updates addressing CVE-2025-56086 and apply them promptly once available. 4. If patching is delayed, consider temporary mitigation by disabling or restricting the vulnerable module_get functionality if feasible through configuration. 5. Conduct thorough audits of all Ruijie RG-EW1200 devices in the environment to identify and isolate any potentially compromised units. 6. Educate network administrators about the vulnerability and signs of exploitation to enhance detection and response capabilities. 7. Implement multi-factor authentication and strong access controls for device management interfaces to reduce risk of unauthorized access. 8. Regularly back up device configurations and maintain incident response plans tailored to network device compromise scenarios.