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Vulnerability Details :

CVE-2026-2459

Summary
Assigner-Hitachi Energy
Assigner Org ID-e383dce4-0c27-4495-91c4-0db157728d17
Published At-24 Feb, 2026 | 13:21
Updated At-28 Feb, 2026 | 02:22
Rejected At-
Credits

A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Hitachi Energy
Assigner Org ID:e383dce4-0c27-4495-91c4-0db157728d17
Published At:24 Feb, 2026 | 13:21
Updated At:28 Feb, 2026 | 02:22
Rejected At:
▼CVE Numbering Authority (CNA)

A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.

Affected Products
Vendor
Hitachi Energy Ltd.Hitachi Energy
Product
Relion REB500
Default Status
unaffected
Versions
Affected
  • From 8.0.0.0 through 8.3.3.0 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-267CWE-267 Privilege Defined with Unsafe Actions
Type: CWE
CWE ID: CWE-267
Description: CWE-267 Privilege Defined with Unsafe Actions
Metrics
VersionBase scoreBase severityVector
4.07.4HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Version: 4.0
Base score: 7.4
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-165CAPEC-165 File Manipulation
CAPEC ID: CAPEC-165
Description: CAPEC-165 File Manipulation
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://publisher.hitachienergy.com/preview?DocumentID=8DBD000217&LanguageCode=en&DocumentPartId=&Action=Launch
N/A
Hyperlink: https://publisher.hitachienergy.com/preview?DocumentID=8DBD000217&LanguageCode=en&DocumentPartId=&Action=Launch
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cybersecurity@hitachienergy.com
Published At:24 Feb, 2026 | 14:16
Updated At:26 Feb, 2026 | 18:05

A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.4HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/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
Primary3.18.1HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Type: Secondary
Version: 4.0
Base score: 7.4
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/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
Type: Primary
Version: 3.1
Base score: 8.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CPE Matches
Hitachi Energy Ltd.
hitachienergy
>>reb500_firmware>>Versions before 8.3.3.1(exclusive)
cpe:2.3:o:hitachienergy:reb500_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>reb500>>-
cpe:2.3:h:hitachienergy:reb500:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-267Primarycybersecurity@hitachienergy.com
CWE ID: CWE-267
Type: Primary
Source: cybersecurity@hitachienergy.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://publisher.hitachienergy.com/preview?DocumentID=8DBD000217&LanguageCode=en&DocumentPartId=&Action=Launchcybersecurity@hitachienergy.com
Vendor Advisory
Hyperlink: https://publisher.hitachienergy.com/preview?DocumentID=8DBD000217&LanguageCode=en&DocumentPartId=&Action=Launch
Source: cybersecurity@hitachienergy.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

Similar CVEs

2Records found
CVE-2026-2460
Matching Score-10
Assigner-Hitachi Energy
ShareView Details
Matching Score-10
Assigner-Hitachi Energy
CVSS Score-7.6||HIGH
EPSS-0.03% / 8.28%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:24
Updated-28 Feb, 2026 | 02:23
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability exists in REB500 for an authenticated user with low-level privileges to access and alter the content of directories by using the DAC protocol that the user is not authorized to do so.

Action-Not Available
Vendor-Hitachi Energy Ltd.
Product-reb500_firmwarereb500Relion REB500
CWE ID-CWE-267
Privilege Defined With Unsafe Actions
CVE-2025-39202
Matching Score-8
Assigner-Hitachi Energy
ShareView Details
Matching Score-8
Assigner-Hitachi Energy
CVSS Score-8.3||HIGH
EPSS-0.03% / 9.98%
||
7 Day CHG~0.00%
Published-24 Jun, 2025 | 11:51
Updated-26 Jan, 2026 | 18:52
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability exists in in the Monitor Pro interface of the MicroSCADA X SYS600 product. An authenticated user with low privileges can see and overwrite files causing information leak and data corruption.

Action-Not Available
Vendor-Hitachi Energy Ltd.
Product-microscada_x_sys600MicroSCADA X SYS600
CWE ID-CWE-269
Improper Privilege Management
Details not found