CVE-2025-57105 is a command injection vulnerability identified in the DI-7400G+ router, specifically within the jhttpd program's web interface components. The vulnerability resides in two functions: sub_478D28 in mng_platform.asp and sub_4A12DC in wayos_ac_server.asp, both of which process the parameter ac_mng_srv_host. Due to improper input validation or sanitization of this parameter, an attacker can inject arbitrary commands that the router executes at the system level. This type of vulnerability allows remote attackers to execute arbitrary code or commands with the privileges of the web server process, which often runs with elevated permissions on embedded devices like routers. Exploitation could lead to full compromise of the device, enabling attackers to manipulate network traffic, intercept data, or use the router as a foothold for further attacks within the network. The vulnerability was published on August 22, 2025, but no CVSS score or patches have been provided yet, and there are no known exploits in the wild at this time. The lack of affected version details suggests that the vulnerability might impact all versions of the DI-7400G+ router firmware that include the vulnerable jhttpd components. The vulnerability's presence in core web management interfaces makes it particularly dangerous because these interfaces are often exposed to internal networks or even the internet, depending on configuration. Attackers exploiting this flaw could bypass authentication or leverage weak authentication mechanisms if present, further increasing the risk. Given the router's role as a network gateway device, successful exploitation could compromise the confidentiality, integrity, and availability of network communications passing through it.

For European organizations, the impact of CVE-2025-57105 could be significant, especially for those relying on the DI-7400G+ router in their network infrastructure. Compromise of these routers can lead to unauthorized network access, interception of sensitive data, and disruption of network services. Attackers could use the compromised routers to launch lateral movement within corporate networks, exfiltrate confidential information, or conduct man-in-the-middle attacks. This is particularly critical for sectors with stringent data protection requirements such as finance, healthcare, and government agencies. Additionally, the disruption or manipulation of network traffic could affect operational technology environments and critical infrastructure. The absence of known exploits currently provides a window for proactive mitigation, but the potential for rapid weaponization exists once exploit code becomes available. The lack of patches or vendor advisories increases the risk, as organizations may need to rely on network-level mitigations or device replacement. The threat also extends to small and medium enterprises that may use consumer-grade or less frequently updated devices like the DI-7400G+ router, increasing the attack surface within European networks.

Given the absence of official patches or detailed vendor guidance, European organizations should adopt a multi-layered mitigation approach. First, immediately isolate or restrict access to the DI-7400G+ router's management interfaces, ensuring they are not accessible from untrusted networks or the internet. Implement strict firewall rules and network segmentation to limit exposure. Disable remote management features if not required. Monitor network traffic for unusual patterns or command injection attempts targeting the ac_mng_srv_host parameter. Employ intrusion detection/prevention systems (IDS/IPS) with custom signatures to detect exploitation attempts. Where possible, replace vulnerable DI-7400G+ routers with devices from vendors providing timely security updates and support. For existing devices, consider firmware rollback or configuration hardening to remove or disable vulnerable web services. Regularly audit router configurations and logs for signs of compromise. Educate IT staff about this vulnerability to ensure rapid response if exploitation is detected. Finally, maintain up-to-date asset inventories to identify all affected devices and prioritize remediation efforts accordingly.