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NVD Vulnerability Details :
CVE-2026-1773
Analyzed
More InfoOfficial Page
Source-cybersecurity@hitachienergy.com
View Known Exploited Vulnerability (KEV) details
Published At-24 Feb, 2026 | 14:16
Updated At-27 Feb, 2026 | 18:56

IEC 60870-5-104: Potential Denial of Service impact on reception of invalid U-format frame. Product is only affected if IEC 60870-5-104 bi-directional functionality is configured. Enabling secure communication following IEC 62351-3 does not remediate the vulnerability but mitigates the risk of exploitation.

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
Secondary4.08.7HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
Hitachi Energy Ltd.
hitachienergy
>>rtu540_firmware>>Versions from 12.7.1(inclusive) to 12.7.7(inclusive)
cpe:2.3:o:hitachienergy:rtu540_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu540_firmware>>Versions from 13.5.1(inclusive) to 13.5.4(inclusive)
cpe:2.3:o:hitachienergy:rtu540_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu540_firmware>>Versions from 13.6.1(inclusive) to 13.6.2(inclusive)
cpe:2.3:o:hitachienergy:rtu540_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu540_firmware>>Versions from 13.7.1(inclusive) to 13.7.8(exclusive)
cpe:2.3:o:hitachienergy:rtu540_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu540_firmware>>13.8.1
cpe:2.3:o:hitachienergy:rtu540_firmware:13.8.1:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu540>>-
cpe:2.3:h:hitachienergy:rtu540:-:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu560_firmware>>Versions from 12.7.1(inclusive) to 12.7.7(inclusive)
cpe:2.3:o:hitachienergy:rtu560_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu560_firmware>>Versions from 13.5.1(inclusive) to 13.5.4(inclusive)
cpe:2.3:o:hitachienergy:rtu560_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu560_firmware>>Versions from 13.6.1(inclusive) to 13.6.2(inclusive)
cpe:2.3:o:hitachienergy:rtu560_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu560_firmware>>Versions from 13.7.1(inclusive) to 13.7.8(exclusive)
cpe:2.3:o:hitachienergy:rtu560_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu560_firmware>>13.8.1
cpe:2.3:o:hitachienergy:rtu560_firmware:13.8.1:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu560>>-
cpe:2.3:h:hitachienergy:rtu560:-:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu520_firmware>>Versions from 12.7.1(inclusive) to 12.7.7(inclusive)
cpe:2.3:o:hitachienergy:rtu520_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu520_firmware>>Versions from 13.5.1(inclusive) to 13.5.4(inclusive)
cpe:2.3:o:hitachienergy:rtu520_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu520_firmware>>Versions from 13.6.1(inclusive) to 13.6.2(inclusive)
cpe:2.3:o:hitachienergy:rtu520_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu520_firmware>>Versions from 13.7.1(inclusive) to 13.7.8(exclusive)
cpe:2.3:o:hitachienergy:rtu520_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu520_firmware>>13.8.1
cpe:2.3:o:hitachienergy:rtu520_firmware:13.8.1:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu520>>-
cpe:2.3:h:hitachienergy:rtu520:-:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu530_firmware>>Versions from 12.7.1(inclusive) to 12.7.7(inclusive)
cpe:2.3:o:hitachienergy:rtu530_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu530_firmware>>Versions from 13.5.1(inclusive) to 13.5.4(inclusive)
cpe:2.3:o:hitachienergy:rtu530_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu530_firmware>>Versions from 13.6.1(inclusive) to 13.6.2(inclusive)
cpe:2.3:o:hitachienergy:rtu530_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu530_firmware>>Versions from 13.7.1(inclusive) to 13.7.8(exclusive)
cpe:2.3:o:hitachienergy:rtu530_firmware:*:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu530_firmware>>13.8.1
cpe:2.3:o:hitachienergy:rtu530_firmware:13.8.1:*:*:*:*:*:*:*
Hitachi Energy Ltd.
hitachienergy
>>rtu530>>-
cpe:2.3:h:hitachienergy:rtu530:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-184Primarycybersecurity@hitachienergy.com
CWE ID: CWE-184
Type: Primary
Source: cybersecurity@hitachienergy.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://publisher.hitachienergy.com/preview?DocumentID=8DBD000237&LanguageCode=en&DocumentPartId=&Action=Launchcybersecurity@hitachienergy.com
Vendor Advisory
Hyperlink: https://publisher.hitachienergy.com/preview?DocumentID=8DBD000237&LanguageCode=en&DocumentPartId=&Action=Launch
Source: cybersecurity@hitachienergy.com
Resource:
Vendor Advisory
Change History
0Changes found
Details not found