Multiple Vulnerabilities in SINEC NMS and SINEMA Server
Plan Patch7.3SSA-250085Mar 8, 2022
Attack VectorLocal
Auth RequiredLow
ComplexityLow
User InteractionRequired
Summary
SINEC NMS and SINEMA Server V14 contain SQL injection (CWE-89), unsafe deserialization (CWE-502), and privilege escalation (CWE-269) vulnerabilities. These flaws allow a local user-level attacker to execute arbitrary code or commands on the management platform, potentially compromising the entire networked industrial control system infrastructure. Siemens has released patches for SINEC NMS (versions 1.0.3 and 2.0) but will not patch SINEMA Server V14, which is end-of-life.
What this means
What could happen
An attacker with local access could execute arbitrary code on the SINEC NMS or SINEMA Server system, potentially compromising network visibility, altering historical data, or gaining control of the management platform. For SINEMA Server V14, which has no patch, exploitation could grant persistent administrative access to the entire Siemens network infrastructure management layer.
Who's at risk
Siemens SINEC NMS users managing wide-area industrial networks, particularly utilities and manufacturers relying on Siemens automation infrastructure. SINEMA Server V14 operators managing SCADA/ICS systems via centralized management platform. Any organization using these products for network and asset management should prioritize patching; SINEMA Server V14 operators face indefinite exposure since no fix is planned.
How it could be exploited
An attacker with local user-level access to the NMS/SINEMA server system could exploit SQL injection, insecure deserialization, or privilege escalation vulnerabilities to execute arbitrary code with elevated privileges. The attack requires user interaction (UI:R) but no remote network access; once on the system, the attacker could modify the management database or run arbitrary commands.
Prerequisites
- Local access to the NMS or SINEMA Server system (physical or via SSH/RDP)
- Valid local user account credentials or ability to trigger interactive UI-based attack vector
- For SINEMA Server V14: no patches available, making all systems vulnerable by default
Local access required but user-level escalation possibleNo patch available for SINEMA Server V14 (end-of-life product)Affects network management layer (high impact if compromised)CWE-89 (SQL injection) and CWE-502 (deserialization) indicate code execution riskEPSS 2.8% indicates low but non-trivial exploit probability
Exploitability
Moderate exploit probability (EPSS 2.8%)
Affected products (3)
2 with fix1 EOL
ProductAffected VersionsFix Status
SINEC NMS<V1.0.31.0.3
SINEC NMS≥ V1.0.3<V2.02.0
SINEMA Server V14All versionsNo fix (EOL)
Remediation & Mitigation
0/4
Do now
0/1SINEMA Server V14
HARDENINGFor SINEMA Server V14: Restrict local access to the server console and management interfaces; require strong authentication and audit local access logs for suspicious activity
Schedule — requires maintenance window
0/2Patching may require device reboot — plan for process interruption
SINEC NMS
HOTFIXUpdate SINEC NMS to version 1.0.3 or later if currently running version prior to 1.0.3
HOTFIXUpdate SINEC NMS to version 2.0 or later if currently running any version between 1.0.3 and 2.0 (exclusive)
Mitigations - no patch available
0/1SINEMA Server V14 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGFor SINEMA Server V14: Apply Siemens-recommended countermeasures (if available) and consider network segmentation of the management server from general IT infrastructure
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