CVE-2025-56079 is an OS command injection vulnerability affecting Ruijie RG-EW1300G wireless routers, specifically firmware versions V1.00, V2.00, and V4.00. The vulnerability resides in the module_get function within 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 service. This type of vulnerability typically arises from insufficient input validation or improper sanitization of user-supplied data before passing it to system-level commands. Since the vulnerability is triggered via network requests, an attacker only needs network access to the device's management interface or exposed service endpoints. No authentication is required, increasing the attack surface. The absence of a CVSS score and public exploit code suggests the vulnerability is newly disclosed and not yet actively exploited in the wild. However, the potential for full device compromise, including unauthorized command execution, data exfiltration, or denial of service, is significant. Ruijie RG-EW1300G devices are commonly deployed in enterprise and service provider environments, making this vulnerability a critical concern for network security. The lack of available patches or mitigation guidance from the vendor necessitates immediate defensive measures by affected organizations.

For European organizations, exploitation of CVE-2025-56079 could lead to severe consequences including unauthorized control over network devices, interception or manipulation of network traffic, and disruption of wireless connectivity. Compromised routers could serve as entry points for lateral movement within corporate networks, enabling attackers to access sensitive data or critical systems. The integrity and availability of network services could be undermined, impacting business operations and potentially causing regulatory compliance issues under GDPR if personal data is exposed. Organizations relying on Ruijie RG-EW1300G devices in sectors such as telecommunications, finance, healthcare, and government are particularly at risk. The vulnerability's exploitation could also facilitate persistent footholds for advanced threat actors targeting European infrastructure. Given the lack of patches, the risk of exploitation may increase over time, especially if exploit code becomes publicly available.

1. Immediately restrict network access to the management interfaces of Ruijie RG-EW1300G devices, limiting it to trusted administrative networks or VPNs. 2. Implement strict firewall rules to block unauthorized POST requests to the vulnerable module_get endpoint. 3. Monitor network traffic for anomalous POST requests targeting /usr/local/lua/dev_sta/networkConnect.lua or unusual command execution patterns. 4. Segment networks to isolate vulnerable devices from critical infrastructure and sensitive data repositories. 5. Engage with Ruijie support channels to obtain firmware updates or patches as they become available. 6. Consider deploying intrusion detection/prevention systems (IDS/IPS) with custom signatures to detect exploitation attempts. 7. Conduct regular security audits and vulnerability assessments focusing on network device configurations and firmware versions. 8. Prepare incident response plans specific to network device compromise scenarios. 9. If possible, replace or upgrade vulnerable devices with models confirmed to be free from this vulnerability. 10. Educate network administrators about the risks and signs of exploitation related to this vulnerability.