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TI-2026-81137 Aliases CVE-2026-10756GHSA-h7g2-j4fw-5qp6

Access restriction bypass in Hitachi Energy TRO600 firmware

Priority LOW 35CWE-923Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Hitachi Energy TRO600 Series Firmware from 9.0.0.0 through 9.2.1.6 has an improper restriction of communication channel to intended endpoints (CWE-923). An authenticated remote attacker with low privileges can bypass network access restrictions and reach services meant to be reachable only from localhost. This exposes sensitive functionality and confidential information and can affect availability.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

TRO600 contains a vulnerability that allows an authenticated attacker to bypass network access restrictions and access services intended to be reachable only from localhost. By leveraging port forwarding, an attacker can interact with locally bound ports and services, resulting in unauthorized access to sensitive functionality and confidential information, and causing availability impact.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0018 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Hitachi EnergyTRO600 Series Firmware9.0.0.0 – 9.2.1.6—No fix listedCNA
  • TRO600 Series Firmware VendorHitachi Energy Affected 9.0.0.0 – 9.2.1.6 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Hitachi Energy TRO600 Series Firmware.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-10756
  2. 2026-10-27 Alias added: GHSA-h7g2-j4fw-5qp6
  3. 2026-10-28 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed

References

Other 1

  • TI-2019-03985 ABB MicroSCADA Pro SYS600 Missing Authentication for Critical Function CVSS 3.1CRITICAL 9.8
  • TI-2018-10635 Improper authentication in ICS-CERT ABB eSOMS CVSS 3.0CRITICAL 9.8
  • TI-2024-01871 Heap-based buffer overflow in Hitachi Energy FOXMAN-UN CVSS 3.1CRITICAL 9.8
  • TI-2026-07105 Path traversal in Hitachi Energy RTU500 series CMU firmware CVSS 3.1CRITICAL 9.1
  • TI-2019-13270 Path traversal in Relion 670 Series CVSS 3.1CRITICAL 10.0
  • TI-2026-07104 Missing authentication in Hitachi Energy RTU500 series CMU firmware CVSS 3.1CRITICAL 9.1
See all 146 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences