Hitachi Energy TropOS
Plan PatchCVSS 8.8ICS-CERT ICSA-25-303-02Oct 30, 2025
Hitachi EnergyEnergyManufacturing
Attack path
Attack VectorNetwork
Auth RequiredLow
ComplexityLow
User InteractionNone needed
Summary
Hitachi Energy TropOS 4th Gen firmware versions 8.9.6.0 and earlier contain command injection (CWE-78) and privilege escalation (CWE-269) vulnerabilities. An authenticated attacker could inject commands or escalate privileges to execute arbitrary code with elevated rights on the device. Hitachi Energy has released a fix in version 8.9.7.0.
What this means
What could happen
An attacker with valid credentials to TropOS could inject commands or escalate privileges to gain full control of the device, potentially altering settings, stopping operations, or disrupting energy distribution.
Who's at risk
This affects Hitachi Energy TropOS 4th Gen devices deployed in energy and manufacturing operations that manage power distribution, generation, or process control. Operators of generation facilities, substations, and industrial control systems using TropOS should treat this as a priority.
How it could be exploited
An attacker with authenticated access to TropOS exploits insufficient input validation (CWE-78) or improper privilege checks (CWE-269) to inject system commands or escalate their privileges. This could allow them to execute arbitrary code with elevated rights on the device.
Prerequisites
- Valid authentication credentials to TropOS (engineering workstation login or authorized access)
- Network access to TropOS management interface
- Running affected firmware version 8.9.6.0 or earlier
Remotely exploitable (authenticated)Requires valid credentialsAffects control systemsLow complexity exploitation
Exploitability
Unlikely to be exploited — EPSS score 0.3%
Affected products (2)
2 with fix
ProductAffected VersionsFix Status
TropOS 4th Gen Firmware: <=8.9.6.0≤ 8.9.6.08.9.7.0
TropOS 4th Gen Firmware: <8.9.6.0<8.9.6.08.9.7.0
Remediation & Mitigation
0/4
Do now
0/1WORKAROUNDRestrict network access to TropOS management interface to authorized engineering workstations only using firewall rules
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpdate TropOS 4th Gen firmware to version 8.9.7.0 or later
Long-term hardening
0/2HARDENINGImplement network segmentation to isolate TropOS devices from business networks and the Internet
HARDENINGDisable direct Internet connectivity to TropOS devices; use VPN with multi-factor authentication if remote access is required
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