A critical vulnerability has been discovered in multiple TDuckCloud products, identified as CVE-2025-57631. This flaw allows a remote, unauthenticated attacker to inject malicious SQL commands through the file upload module, potentially leading to arbitrary code execution. Successful exploitation could result in a complete compromise of the affected server, allowing attackers to steal data, disrupt services, and gain a foothold in the network.

The vulnerability is a SQL Injection within the "Add a file upload module" of TDuckCloud software. An unauthenticated remote attacker can craft a malicious request to this module containing specially designed SQL commands. Due to improper input sanitization, these commands are executed directly by the backend database, which can be leveraged to read, modify, or delete sensitive data, and ultimately escalate to executing arbitrary code on the underlying server operating system.

This vulnerability is rated as critical severity with a CVSS score of 9.8, posing a severe risk to the organization. Exploitation could lead to a complete loss of confidentiality, integrity, and availability of the affected system and its data. Potential consequences include theft of sensitive customer or corporate data, unauthorized modification of records, deployment of ransomware, and complete service disruption. A successful attack could result in significant financial loss, regulatory fines, and severe reputational damage.

Immediate Action: Immediately apply the security updates provided by the vendor to patch all affected TDuckCloud products to the latest version. After patching, it is crucial to monitor for any signs of exploitation that may have occurred prior to remediation by reviewing application and web server access logs for suspicious activity.

Proactive Monitoring: Security teams should actively monitor web server and database logs for requests to the file upload module containing SQL keywords (e.g., SELECT, UNION, INSERT, --, ' OR '1'='1'). Monitor for anomalous outbound network traffic from the affected servers, which could indicate a successful compromise and communication with an attacker's command-and-control server. Implement alerts for repeated failed database queries or unusual system processes spawned by the web server user.

Compensating Controls: If immediate patching is not feasible, implement a Web Application Firewall (WAF) with strict rulesets designed to detect and block SQL injection attacks. If possible, restrict network access to the vulnerable "Add a file upload module" to only trusted IP addresses or place it behind a robust authentication mechanism.

Public Exploit Available: false

Due to the critical severity of this vulnerability, we strongly recommend that organizations prioritize the immediate patching of all affected TDuckCloud products. The potential for a complete system compromise by an unauthenticated attacker represents an unacceptable risk. Although this CVE is not currently on the CISA KEV list, its high impact makes it a prime candidate for future inclusion and a high-value target for attackers. All remediation and monitoring actions should be executed without delay.