Fanruan FineReport Remote Code Execution Scanner

Fanruan FineReport is a leading business intelligence and reporting tool used by enterprises to create dynamic, data-driven reports. It is widely deployed across finance, retail, and manufacturing sectors, enabling analysts and decision-makers to visualize complex datasets. The platform integrates seamlessly with existing IT infrastructures, often handling sensitive business information, making its security critical for organizational operations.

The Remote Code Execution (RCE) vulnerability in Fanruan FineReport stems from improper deserialization of untrusted data within the FineReport/FineBI channel interface. This occurs when the application processes serialized objects without adequate validation, allowing attackers to inject malicious payloads. The flaw arises from insecure coding practices in handling Java deserialization, a common issue in enterprise applications.

Specifically, the vulnerability is triggered through the channel interface endpoint that accepts serialized data. Attackers can craft a malicious serialized object and send it to this endpoint, bypassing authentication. The application then deserializes the object, executing arbitrary code embedded within it. This endpoint is often exposed to internal networks, increasing the attack surface.

If exploited, this vulnerability grants attackers full control over the affected server, enabling data theft, system compromise, and lateral movement within the network. The CVSS score of 9.0 underscores its critical severity, as it can lead to complete loss of confidentiality, integrity, and availability. Organizations using Fanruan FineReport must prioritize remediation to prevent potential breaches.