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TI-2026-07104 Aliases CVE-2026-8065GHSA-gg49-9mrv-ff3f

Missing authentication in Hitachi Energy RTU500 series CMU firmware

Priority MEDIUM 46CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to upload arbitrary firmware through a crafted POST request. Successful exploitation could allow the attacker to modify device functionality or compromise the integrity or availability of the device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00494 42nd percentileScored 2026-11-07
Fix Fixed RTU500 series CMU firmware (Hitachi Energy): 12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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 EnergyRTU500 series CMU firmware9.0 to before 12.012.0Patch availableCNA
  • RTU500 series CMU firmware VendorHitachi Energy Affected 9.0 to before 12.0 Fixed in 12.0 Patch available CNA

Remediation

  • Fix · CNA RTU500 series CMU firmware (Hitachi Energy) Fixed in 12.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Hitachi Energy RTU500 series CMU firmware 12.0

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-07105 Path traversal in Hitachi Energy RTU500 series CMU firmwarePriority MEDIUM 47
    • TI-2026-07106 Missing authorization in Hitachi Energy RTU500 series CMU firmwarePriority LOW 28
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8065
  2. 2026-10-03 Alias added: GHSA-gg49-9mrv-ff3f

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-2026-01456 IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of… CVSS 4.0HIGH 8.7
See all 146 →

Sources

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