Directory Traversal in REB500 by Hitachi Energy
CVE-2026-2459

7.4HIGH

Key Information:

Vendor

Hitachi
Status
Relion Reb500
Vendor
CVE Published:
24 February 2026

What is CVE-2026-2459?

A vulnerability in the REB500 product permits authenticated users with the Installer role to access and modify directory contents beyond their authorized permissions. This issue can lead to unauthorized disclosure of sensitive information and potential system compromise, underlining the need for heightened security measures.

Affected Version(s)

Relion REB500 8.0.0.0 <= 8.3.3.0

References

https://publisher.hitachienergy.com/preview?DocumentID=8D...

CVSS V4

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.