CVE-2025-30131: Iroadau Fx2 Firmware RCE Vulnerability

CVE-2025-30131 Overview

An unauthenticated file upload vulnerability has been discovered in IROAD Dashcam FX2 devices that allows attackers to execute arbitrary commands with root privileges. The vulnerability exists in an unprotected file upload endpoint that can be exploited to upload CGI-based webshells. Once uploaded, attackers gain full control over the dashcam, enabling complete device takeover. By uploading a netcat (nc) binary, persistent remote access can be established through a reverse shell connection.

Critical Impact

This vulnerability allows unauthenticated remote attackers to gain root-level access and complete control over IROAD Dashcam FX2 devices through arbitrary file upload and command execution.

Affected Products

• IROAD FX2 Firmware (all versions)
• IROAD FX2 Hardware Device

Discovery Timeline

• 2025-06-26 - CVE-2025-30131 published to NVD
• 2025-11-06 - Last updated in NVD database

Technical Details for CVE-2025-30131

Vulnerability Analysis

CVE-2025-30131 is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type), a severe firmware vulnerability affecting IROAD Dashcam FX2 devices. The vulnerability stems from an unauthenticated file upload endpoint that fails to properly validate or restrict the types of files that can be uploaded to the device.

The attack surface is particularly concerning given the network-accessible nature of the vulnerability. An attacker does not require any prior authentication or user interaction to exploit this flaw. The impact is severe across all three security dimensions: confidentiality, integrity, and availability are fully compromised once exploitation occurs.

Root Cause

The root cause of this vulnerability is the lack of proper access controls and file type validation on the file upload endpoint. The device's web server accepts arbitrary file uploads without authentication, and critically, it does not restrict the upload of executable files such as CGI scripts. This architectural weakness allows attackers to upload malicious code that the server will subsequently execute.

Attack Vector

The exploitation of this vulnerability follows a straightforward attack pattern. An attacker identifies the vulnerable file upload endpoint on the IROAD Dashcam FX2 device, which is accessible over the network without authentication. The attacker then crafts and uploads a malicious CGI-based webshell to the device. Once the webshell is in place, the attacker accesses it through the web server to execute arbitrary commands with root privileges.

For persistent access, attackers can upload additional tools such as the netcat (nc) binary. This enables the establishment of a reverse shell connection, providing ongoing remote access to the compromised device. The attacker effectively gains complete control over the dashcam, including access to recorded video footage, GPS data, and the ability to manipulate device settings or use it as a pivot point for further attacks on the network.

Technical details and proof-of-concept information can be found in the GitHub CVE-2025-30131 Discovery documentation.

Detection Methods for CVE-2025-30131

Indicators of Compromise

• Unexpected CGI files appearing in web-accessible directories on the device
• Outbound network connections from the dashcam to external IP addresses
• Presence of unauthorized binaries such as nc (netcat) on the device filesystem
• Unusual HTTP POST requests to file upload endpoints from unknown sources

Detection Strategies

• Monitor network traffic to and from dashcam devices for suspicious HTTP requests, particularly POST requests to upload endpoints
• Implement network segmentation to isolate IoT devices like dashcams from critical network infrastructure
• Deploy intrusion detection rules to alert on reverse shell patterns or unexpected outbound connections from embedded devices
• Conduct periodic firmware integrity checks to identify unauthorized file modifications

Monitoring Recommendations

• Enable logging on network devices to capture traffic patterns involving dashcam devices
• Monitor for unusual data exfiltration patterns from IoT device network segments
• Establish baselines for normal dashcam network behavior to identify anomalous activity
• Consider implementing application-layer firewalls to inspect and filter traffic to vulnerable endpoints

How to Mitigate CVE-2025-30131

Immediate Actions Required

• Isolate IROAD Dashcam FX2 devices from untrusted networks immediately
• Disable or restrict network access to the dashcam's web interface if not required for operation
• Implement network-level access controls to limit which hosts can communicate with dashcam devices
• Review dashcam filesystems for evidence of compromise or unauthorized files

Patch Information

At the time of this advisory, no official patch information has been released by the vendor. Users should monitor the IROAD Download Resources page for firmware updates that address this vulnerability. Contact IROAD support directly for guidance on remediation options.

Workarounds

• Place dashcam devices on an isolated network segment with no direct internet access
• Configure firewall rules to block inbound connections to the dashcam's web server from untrusted sources
• Disable Wi-Fi functionality on the dashcam when not actively required for legitimate use
• Implement MAC address filtering and other network-level access controls as defense-in-depth measures