CVE-2025-2403

highpriority · track · 0EPSS 0.004 · 31 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.37% (31st) EPSS
CVSS 7.5 · high
Is it mine?
32 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A denial-of-service vulnerability due to improper prioritization of network traffic over protection mechanism exists in Relion 670/650 and SAM600-IO series device that if exploited could potentially cause critical functions like LDCM (Line Distance Communication Module) to malfunction.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedRelion 650cisa_csaf_ot

    Fixed in version 2.2.5.7. Update to version 2.2.5.8 or latest

  • FixedRelion 670cisa_csaf_ot

    Fixed in version 2.2.5.7. Update to version 2.2.5.8 or latest

  • FixedSAM600-IOcisa_csaf_ot

    Fixed in version 2.2.5.7. Update to version 2.2.5.8 or latest

  • MitigationRelion 650cisa_csaf_ot

    Apply general mitigation factors

  • MitigationRelion 670cisa_csaf_ot

    Apply general mitigation factors

  • MitigationSAM600-IOcisa_csaf_ot

    Apply general mitigation factors

02

cvss

Technical severity, 0–10. One row per scoring source.

8.7
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cybersecurity@hitachienergy.comexploitability 3.9 · impact 3.6
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.08.7highCVSS: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:Xsecondary · cybersecurity@hitachienergy.com
v4.06.6mediumCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USCWE-770USCWE-770US
05

affected products (32)

Products and version ranges known to be affected.

showing 20 of 32
06

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2025-1392Hitachi Energy Relion 650/670 series: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2025-06-24csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Hitachi Energy Relion ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • ICSA-25-182-06Hitachi Energy Relion 670/650 and SAM600-IO Series (Update A)2025-06-24icsa · cisa_csaf_otUS

    Hitachi Energy is aware of a vulnerability that affects the Relion 670/650 and SAM600-IO series IED device versions that are listed in this document. An authenticated attacker successfully exploiting this vulnerability via FTP access can cause the device to reboot due to improper disk space management. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisa_csaf_otNVDCVE.orgMITRE
published 2025-06-24modified 2026-06-17
09

references (5)

External citations — patches, advisories, analysis.

scry

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