CVE-2025-34148 is an OS command injection vulnerability classified under CWE-78, found in the Shenzhen Aitemi M300 Wi-Fi Repeater (model MT02). The vulnerability exists because the device's firmware improperly handles the 'ssid' parameter during configuration in WISP mode, passing it unsanitized to system-level shell scripts. This allows an unauthenticated attacker within Wi-Fi range to inject arbitrary shell commands that execute with root privileges on the device. The lack of input validation or sanitization means that crafted SSID values can manipulate the underlying operating system commands, leading to full device compromise. The vulnerability affects all versions of the product, indicating a systemic flaw in the firmware design. The CVSS 4.0 score of 9.4 highlights the critical nature of this vulnerability, with attack vector being adjacent network (Wi-Fi range), no required privileges or user interaction, and a high impact on confidentiality, integrity, and availability. Although no exploits are currently reported in the wild, the ease of exploitation and root-level access make this a severe threat. The vulnerability could be leveraged to pivot into internal networks, intercept or manipulate traffic, or deploy persistent malware on the device. The absence of vendor patches at the time of publication increases the urgency for mitigation.

For European organizations, this vulnerability poses a significant risk, especially for those deploying Shenzhen Aitemi M300 Wi-Fi Repeaters in enterprise, industrial, or critical infrastructure environments. An attacker within Wi-Fi range can gain root access to the device, potentially using it as a foothold to infiltrate internal networks, intercept sensitive communications, or disrupt network availability. This could lead to data breaches, espionage, or service outages. The vulnerability undermines network perimeter security and may facilitate lateral movement to other connected systems. Given the device’s role in extending Wi-Fi coverage, compromised repeaters could be used to launch man-in-the-middle attacks or serve as persistent access points for attackers. The impact is heightened in environments with weak network segmentation or where these devices are deployed in sensitive locations. The lack of authentication and user interaction requirements means even casual attackers or insiders could exploit this flaw. The overall effect threatens confidentiality, integrity, and availability of organizational IT assets.

Immediate mitigation involves disabling WISP mode on affected devices to prevent exploitation of the vulnerable code path. Organizations should isolate Shenzhen Aitemi M300 repeaters on segmented network zones with strict access controls to limit attacker movement. Monitoring Wi-Fi networks for suspicious SSID broadcasts or anomalous device behavior can help detect exploitation attempts. Since no official patches are available yet, organizations should engage with the vendor for firmware updates and apply them promptly once released. If replacement is feasible, consider substituting affected devices with models from vendors with stronger security track records. Employ network-level protections such as wireless intrusion detection/prevention systems (WIDS/WIPS) to detect and block malicious Wi-Fi activity. Regularly audit and inventory network devices to identify vulnerable hardware. Educate staff about the risks of rogue Wi-Fi configurations and enforce policies restricting unauthorized device configuration. Finally, implement strong network segmentation to contain potential compromises.