CVE-2025-14756 is a command injection vulnerability classified under CWE-77, discovered in the admin interface component of the TP-Link Archer MR600 v5.0 firmware. The flaw arises from improper neutralization of special elements in user-supplied input, allowing an authenticated attacker with high privileges to inject and execute arbitrary system commands. The attack vector involves crafting input via the browser developer console, exploiting insufficient input validation or sanitization in the admin interface. Although the injected commands are limited in character length, this constraint does not prevent attackers from chaining commands or using encoded payloads to achieve significant control. The vulnerability affects the confidentiality, integrity, and availability of the device, potentially leading to service disruption or full compromise of the router. The CVSS 4.0 score of 8.5 reflects the high impact and relatively low attack complexity, given that no user interaction is required beyond authentication. No patches or known exploits are currently available, but the vulnerability is publicly disclosed, increasing the risk of future exploitation. The vulnerability is particularly concerning because the Archer MR600 is commonly deployed in small to medium enterprise and home office environments, where compromised routers can serve as pivot points for broader network attacks.

For European organizations, exploitation of this vulnerability could lead to severe consequences including unauthorized command execution on critical network infrastructure, resulting in potential data breaches, network outages, or persistent attacker footholds. Given the router’s role in managing internet connectivity and internal traffic, attackers could intercept, modify, or disrupt communications, impacting confidentiality and integrity of sensitive data. Service disruption could affect business continuity, especially for SMEs relying on this device for network access. Additionally, compromised routers could be leveraged to launch further attacks within organizational networks or as part of botnets targeting other entities. The high severity and the requirement for authenticated access mean insider threats or compromised credentials could facilitate exploitation. Organizations in sectors with strict regulatory requirements for data protection (e.g., finance, healthcare) face increased compliance risks if this vulnerability is exploited.

1. Immediately restrict access to the router’s admin interface to trusted management networks only, using network segmentation and firewall rules. 2. Enforce strong authentication mechanisms and change default or weak passwords to prevent unauthorized access. 3. Monitor router logs and network traffic for unusual command execution patterns or administrative activity. 4. Disable remote management features if not required to reduce exposure. 5. Implement multi-factor authentication for admin access where supported. 6. Regularly audit and update firmware; apply vendor patches promptly once released. 7. Consider deploying network intrusion detection systems (NIDS) to detect exploitation attempts targeting this vulnerability. 8. Educate administrators about the risks of using browser developer consoles for inputting commands or configurations. 9. Maintain an inventory of affected devices to prioritize remediation efforts. 10. If possible, isolate vulnerable devices from critical network segments until patched.