CVE-2025-31353 in TeleControl Server Basic
Summary
by MITRE • 04/16/2025
A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.2). The affected application is vulnerable to SQL injection through the internally used 'UpdateOpcSettings' method. This could allow an authenticated remote attacker to bypass authorization controls, to read from and write to the application's database and execute code with "NT AUTHORITY\NetworkService" permissions. A successful attack requires the attacker to be able to access port 8000 on a system where a vulnerable version of the affected application is executed on. (ZDI-CAN-25916)
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Analysis
by VulDB Data Team • 08/19/2025
The vulnerability CVE-2025-31353 represents a critical SQL injection flaw in TeleControl Server Basic versions prior to V3.1.2.2, specifically within the 'UpdateOpcSettings' method. This vulnerability arises from insufficient input validation and sanitization of user-supplied data, creating an attack vector that allows malicious actors to manipulate database queries through crafted payloads. The flaw exists at the application layer where user inputs are directly incorporated into SQL commands without proper parameterization or escaping mechanisms, making it susceptible to exploitation by attackers who can influence the application's behavior through database interactions.
The technical exploitation of this vulnerability requires an authenticated attacker with network access to port 8000, which serves as the primary communication channel for the TeleControl Server Basic application. This authentication requirement provides some operational control but does not eliminate the severity of the issue, as the attacker can leverage the SQL injection to bypass authorization mechanisms and gain elevated database access. The vulnerability enables a wide range of malicious activities including data exfiltration, unauthorized modifications to application configuration, and potentially arbitrary code execution within the application's security context. The compromised permissions grant the attacker access with "NT AUTHORITY\NetworkService" privileges, which typically provides limited but persistent access to system resources and network services.
The operational impact of this vulnerability extends beyond simple data compromise, as it creates a persistent backdoor for attackers to maintain access and expand their control within the network environment. The ability to read from and write to the application's database allows for comprehensive reconnaissance of stored information, including potentially sensitive configuration data, user credentials, and operational parameters. Furthermore, the execution capabilities with network service privileges can enable attackers to establish further footholds, escalate privileges, or deploy additional malicious tools within the compromised system. The vulnerability affects all versions prior to V3.1.2.2, indicating a long-standing issue that has not been adequately addressed in the affected product line.
Organizations should prioritize immediate remediation through the application of the vendor-provided security patch for TeleControl Server Basic version 3.1.2.2 or later, which implements proper input validation and parameterized query execution to prevent SQL injection attacks. Network segmentation and access control measures should be implemented to restrict access to port 8000, limiting the attack surface and reducing the likelihood of exploitation. The implementation of web application firewalls and database activity monitoring can provide additional layers of protection by detecting and blocking suspicious SQL injection attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the broader network infrastructure and ensure that all applications follow secure coding practices that align with industry standards such as those defined in CWE-89 for SQL injection vulnerabilities. This vulnerability demonstrates the critical importance of maintaining up-to-date security patches and implementing defense-in-depth strategies to protect against authenticated attack vectors that can lead to system compromise and data breaches.