CVE-2024-7940 Hitachi Energy CVE debrief

Who should care

Operators, administrators, and asset owners using Hitachi Energy MACH GWS, especially in operational technology or industrial environments where the service may be reachable from the network. Any organization running affected versions should treat this as a priority exposure because the vulnerable service is intended to be local-only but is exposed without authentication.

Technical summary

The CSAF advisory describes a network-exposed service that should have remained local-only and is accessible on all network interfaces without authentication. The provided CVSS vector is CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H, yielding a score of 8.3 (High). CISA lists affected products as Hitachi Energy MACH GWS versions 3.1.0.0 to 3.3.0.0 and the vendor remediation as upgrading to 3.4.0.0, with additional mitigation guidance available from the local account team.

Defensive priority

High. This is a remotely reachable exposure with no authentication on an intended local-only service, and the vendor has a fixed release. Prioritize identifying whether MACH GWS is deployed, determining exposure, and planning remediation or compensating controls.

Recommended defensive actions

• Inventory all Hitachi Energy MACH GWS deployments and confirm whether any systems run versions 3.1.0.0 through 3.3.0.0.
• Check whether the service is reachable from any non-local network path and restrict exposure immediately where possible.
• Upgrade affected systems to version 3.4.0.0 per the vendor remediation guidance.
• If immediate upgrading is not possible, contact the local account team for mitigation strategies as referenced in the advisory.
• Review OT/ICS network segmentation and access controls to ensure local-only services are not broadly reachable.
• Validate remediation after changes by confirming the affected service is no longer exposed beyond intended local access.

Evidence notes

All factual claims in this debrief are drawn from the supplied CSAF advisory metadata and associated official references. The advisory states the issue is that MACH GWS exposes a local-only service to all network interfaces without authentication, affects versions 3.1.0.0 to 3.3.0.0, and recommends upgrading to 3.4.0.0 or seeking mitigation guidance. The published and modified dates supplied for the CVE and source are 2025-02-25T13:30:00.000Z.

Official resources