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Hitachi Energy MACH HiDraw

MonitorCVSS 5.5ICS-CERT ICSA-26-155-05May 26, 2026
Hitachi EnergyEnergy
Attack path
Attack VectorLocal
Auth RequiredLow
ComplexityHigh
User InteractionRequired
Summary

Hitachi Energy has identified a buffer overflow vulnerability in MACH HiDraw versions 9.22 and earlier. Successful exploitation could result in application outages (denial of service) and potential arbitrary code execution. The vulnerability requires local access to an affected workstation and user interaction to trigger.

What this means
What could happen
A buffer overflow in MACH HiDraw could allow a local attacker to crash the application (preventing operators from viewing or managing control diagrams) or potentially execute arbitrary code on the engineering workstation, compromising the integrity of power system engineering data.
Who's at risk
This vulnerability affects power system operators and engineers at utilities who use MACH HiDraw for control system design, planning, and engineering on workstations. The risk is primarily to the engineering environment and workstations, not directly to field equipment or operational systems, though compromise of engineering tools could allow modification of control logic.
How it could be exploited
An attacker with local access to an engineering workstation running MACH HiDraw could trigger the buffer overflow by providing malformed input or a specially crafted file to the application. If successful, this could lead to application crash or code execution with the privileges of the user running MACH HiDraw.
Prerequisites
  • Local access to the engineering workstation running MACH HiDraw
  • User interaction required (the user must open or interact with a malformed input/file)
  • Low-level user account privileges (not administrative)
Buffer overflow vulnerabilityLow authentication requirement (local user account)High impact on availability (denial of service via application crash)Affects engineering/planning tools rather than operational field devices
Exploitability
Unlikely to be exploited — EPSS score 0.1%
Affected products (1)
ProductAffected VersionsFix Status
MACH HiDraw≤ 9.229.23.
Remediation & Mitigation
0/5
Do now
0/1
HARDENINGRestrict local access to engineering workstations running MACH HiDraw to authorized personnel only
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpdate MACH HiDraw to version 9.23 or later
Long-term hardening
0/3
HARDENINGImplement network segmentation to isolate MACH HiDraw workstations from untrusted networks and the Internet
HARDENINGEstablish and enforce policies prohibiting use of MACH HiDraw workstations for Internet access, email, or instant messaging
HARDENINGImplement antivirus scanning for all portable storage media and external devices before connecting to systems running MACH HiDraw
View full CISA ICS-CERT advisory
API: /api/v1/advisories/419735f4-7d27-44c9-a8d1-35ca72495c22

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Hitachi Energy MACH HiDraw | CVSS 5.5 - OTPulse