CVE-2025-32822 Overview
CVE-2025-32822 is a SQL injection vulnerability in Siemens TeleControl Server Basic affecting all versions prior to V3.1.2.2. The flaw exists in the internally used DeleteProject method, which fails to sanitize input before passing it to the database engine. An authenticated remote attacker with access to TCP port 8000 can bypass authorization controls, read and write to the application database, and execute code as NT AUTHORITY\NetworkService. The vulnerability is tracked under CWE-89 and documented in Siemens Security Advisory SSA-443402.
Critical Impact
Authenticated attackers can bypass authorization, manipulate the application database, and execute code with NT AUTHORITY\NetworkService privileges on affected Siemens TeleControl Server Basic installations.
Affected Products
- Siemens TeleControl Server Basic — all versions prior to V3.1.2.2
- Deployments exposing TCP port 8000 to untrusted networks
- Industrial control environments using TeleControl Server Basic for SCADA communications
Discovery Timeline
- 2025-04-16 - CVE-2025-32822 published to NVD
- 2025-04-16 - Siemens publishes advisory SSA-443402
- 2025-08-19 - Last updated in NVD database
Technical Details for CVE-2025-32822
Vulnerability Analysis
The vulnerability resides in the DeleteProject method, an internal application routine exposed through the TeleControl Server Basic service listening on TCP port 8000. The method constructs SQL statements using attacker-controlled input without parameterization or proper escaping. An authenticated user can inject arbitrary SQL syntax that the database engine executes within the application context.
Because the injection occurs in a privileged code path, attackers gain access beyond the permissions assigned to their account. The service runs under NT AUTHORITY\NetworkService, so successful exploitation translates SQL injection into code execution at that privilege level. This combination provides both data tampering and host-level command execution from a single vector.
Root Cause
The root cause is improper neutralization of special elements used in an SQL command [CWE-89]. The DeleteProject handler concatenates user-supplied values directly into SQL queries instead of using prepared statements with bound parameters. Authorization checks are also enforced at a layer above the vulnerable query, so successful injection bypasses access controls that should restrict project deletion.
Attack Vector
Exploitation requires network reachability to port 8000 and valid authentication to the TeleControl Server Basic application. The attacker submits a crafted request that invokes the DeleteProject method with malicious SQL syntax in a parameter the method passes to the database. The database executes the injected statements, allowing the attacker to read sensitive tables, modify project data, or leverage database features such as stored procedures to execute operating system commands as NT AUTHORITY\NetworkService.
The vulnerability is described in prose only. Refer to the Siemens Security Advisory SSA-443402 for vendor technical details. No public proof-of-concept exploit is currently available.
Detection Methods for CVE-2025-32822
Indicators of Compromise
- Unexpected child processes spawned by the TeleControl Server Basic service running as NT AUTHORITY\NetworkService
- Database log entries showing DeleteProject invocations containing SQL meta-characters such as ', ;, --, or UNION
- Outbound network connections initiated from the TeleControl server host to unknown infrastructure
- New or modified rows in TeleControl project tables that do not correspond to legitimate administrative activity
Detection Strategies
- Inspect application and database logs for malformed parameters delivered to the DeleteProject method.
- Monitor authentication events on TCP port 8000 for brute-force attempts or anomalous successful logins from new source addresses.
- Correlate process creation events on the TeleControl host with database query activity to detect SQL-injection-to-command-execution chains.
Monitoring Recommendations
- Enable SQL Server auditing on the database backing TeleControl Server Basic and forward events to a centralized log platform.
- Alert on any process spawned by the TeleControl service that is not part of its known execution baseline.
- Track network flows to TCP port 8000 and flag connections originating from outside the engineering or operations network.
How to Mitigate CVE-2025-32822
Immediate Actions Required
- Upgrade Siemens TeleControl Server Basic to version V3.1.2.2 or later as directed in advisory SSA-443402.
- Restrict network access to TCP port 8000 so that only trusted engineering workstations can reach the service.
- Audit and rotate credentials for all accounts authorized to authenticate to the TeleControl Server Basic application.
- Review database and application logs for evidence of prior exploitation of the DeleteProject method.
Patch Information
Siemens has released TeleControl Server Basic V3.1.2.2, which remediates CVE-2025-32822. Detailed remediation guidance is available in Siemens Security Advisory SSA-443402. Apply the update through Siemens distribution channels and validate the version after installation.
Workarounds
- Place the TeleControl server on a segmented network and block TCP port 8000 at the perimeter firewall.
- Limit application accounts to the minimum required privileges and disable unused accounts.
- Run the TeleControl service host behind a jump server requiring multi-factor authentication for administrative access.
- Apply host-based firewall rules to permit traffic to port 8000 only from documented engineering IP ranges.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
