# CVE-2026-10756: CVE-2026-10756

Status: published. Published: 2026-10-27. Updated: 2026-11-04.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Hitachi Energy / TRO600 Series Firmware: ≥ 9.0.0.0; ≤ 9.2.1.6 (affected, custom). Source: CNA: Hitachi Energy

## Severity and prioritization

- CVSS 4.0: 7.7 (high); CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: Hitachi Energy

- CVSS 4.0: 7.7 (high); CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cybersecurity@hitachienergy.com

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-04; percentile 7.68%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-923

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://publisher.hitachienergy.com/preview?DocumentID=8DBD000224&LanguageCode=en&DocumentPartId=&Action=Launch (CNA: Hitachi Energy)

- https://publisher.hitachienergy.com/preview?DocumentID=8DBD000224&LanguageCode=en&DocumentPartId=&Action=Launch (cybersecurity@hitachienergy.com)

## Provenance

- CNA: Hitachi Energy: https://www.cve.org/CVERecord?id=CVE-2026-10756; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-10756; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-10756; retrieved 2026-11-04; source updated Not reported

Revision: dd2f059a2b89d89ebb87ad5b5fafd9a1713846ce6fb26559162d5290cca213e1

Canonical: https://y2.dev/cve/CVE-2026-10756

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