Overview
This article discusses a critical vulnerability, identified as CVE-2025-64052, affecting Fanvil x210 V2 IP phones running firmware version 2.12.20. This vulnerability allows unauthenticated attackers on the same local network to execute arbitrary system commands on the affected device. This can lead to a complete compromise of the phone and potentially the network it’s connected to.
Technical Details
CVE-2025-64052 exposes a flaw within the Fanvil x210 V2’s firmware that allows remote command execution without requiring authentication. The specific details of the vulnerability, including the vulnerable endpoint or function, are outlined in the advisory linked below. An attacker exploiting this vulnerability could leverage it to gain unauthorized access to the underlying operating system of the phone.
CVSS Analysis
Currently, the CVSS score and severity for CVE-2025-64052 are listed as N/A. However, given the potential for unauthenticated remote command execution, it is expected that the CVSS score, when assigned, will likely be in the critical range. This assessment is based on the impact of gaining complete control of the device.
Possible Impact
The exploitation of CVE-2025-64052 can have serious consequences:
- Complete System Compromise: Attackers can gain full control of the Fanvil x210 V2 device.
- Data Theft: Sensitive information stored on the phone, such as call logs, contacts, and configuration details, can be stolen.
- Malware Installation: The phone can be used as a beachhead to install malware and spread it across the local network.
- Denial of Service: The phone’s functionality can be disrupted, leading to a denial of service for its intended purpose.
- Eavesdropping: Attackers could potentially intercept phone calls.
Mitigation and Patch Steps
The primary mitigation strategy is to update the Fanvil x210 V2 firmware to a patched version that addresses CVE-2025-64052. Fanvil has likely released a patch to resolve this issue. Follow these steps:
- Check for Updates: Visit the Fanvil website and navigate to the support or download section for the Fanvil x210 V2.
- Download the Latest Firmware: Download the latest firmware version available.
- Apply the Update: Follow Fanvil’s instructions for updating the firmware on the x210 V2. This usually involves accessing the phone’s web interface.
- Network Segmentation: If immediate patching isn’t possible, consider segmenting the network to isolate the IP phones from other critical systems.
- Monitor Network Traffic: Monitor network traffic for any suspicious activity originating from the Fanvil x210 V2 devices.
