Siemens SINEC NMS
Plan Patch8.8ICS-CERT ICSA-25-289-08Oct 14, 2025
Attack VectorNetwork
Auth RequiredLow
ComplexityLow
User InteractionNone needed
Summary
SINEC NMS is affected by a SQL injection vulnerability (CWE-89) that allows an authenticated low-privilege user to insert malicious data and escalate their account to higher privileges. The vulnerability exists in versions prior to 4.0 SP1. Successful exploitation could allow an attacker to gain administrative access to the network management system, potentially enabling control over monitored industrial devices or extraction of sensitive configuration data.
What this means
What could happen
An authenticated user with low-level access to SINEC NMS could inject malicious SQL commands to extract sensitive data or escalate their privileges to administrative level, potentially gaining full control over the network management system and the industrial devices it monitors.
Who's at risk
Water utilities, electric utilities, and other industrial operators using SINEC NMS (Siemens' network management system) to monitor and manage industrial control systems and networked devices. Particularly relevant for organizations using Siemens automation equipment across multiple sites or remote locations.
How it could be exploited
An attacker with valid low-privilege credentials to SINEC NMS can craft malicious input containing SQL commands in a data entry field. When the application processes this input without proper sanitization, the SQL database executes the attacker's commands instead of treating the input as data, allowing privilege escalation or data exfiltration.
Prerequisites
- Valid SINEC NMS user account with low-privilege access (e.g., regular operator or technician role)
- Network access to the SINEC NMS application (web interface or API endpoint)
- SINEC NMS version prior to 4.0 SP1
Remotely exploitableAuthentication required (low-privilege credentials)SQL injection (CWE-89)Allows privilege escalation
Exploitability
Low exploit probability (EPSS 0.0%)
Affected products (1)
ProductAffected VersionsFix Status
SINEC NMS<V4.0 SP14.0 SP1
Remediation & Mitigation
0/4
Do now
0/1WORKAROUNDRestrict network access to SINEC NMS using firewall rules to allow only authorized operator workstations and engineering stations
Schedule — requires maintenance window
0/2Patching may require device reboot — plan for process interruption
HOTFIXUpdate SINEC NMS to version 4.0 SP1 or later
HARDENINGReview and minimize user account privileges in SINEC NMS; remove unnecessary administrative accounts and enforce role-based access control
Long-term hardening
0/1HARDENINGSegment the SINEC NMS management network from the general corporate network using VLANs or dedicated network infrastructure
CVEs (1)
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