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Fencer Vulns
medium 6.5

CVE-2023-4518 json

A vulnerability exists in the input validation of the GOOSE messages where out of range values received and processed by the IED caused a r…

published 2023-12-01 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54373

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

A vulnerability exists in the input validation of the GOOSE messages where out of range values received and processed by the IED caused a reboot of the device. In order for an attacker to exploit the vulnerability, goose receiving blocks need to be configured.

Patch / fix

  • hitachienergy relion_670_firmware 2.2.2.6, 2.2.3.7, 2.2.4.4, 2.2.5.6
  • hitachienergy relion_650_firmware 2.2.4.4, 2.2.5.6
  • hitachienergy relion_sam600-io_firmware 2.2.5.6

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-133-02 updated cvss 6.5

Hitachi Energy Relion 670/650/SAM600-IO Series (Update C)

  • Hitachi Energy Relion 670 vers:Relion_670/>=2.0.0.0, <=2.0.0.13, vers:Relion_670/>=2.2.2.0, <2.2.2.6, vers:Relion_670/>=2.2.3.0, <2.2.3.7
    affected: fixed in 2.0.0.14, mitigation
  • Hitachi Energy Relion 670/650 vers:Relion_670/650/>=2.1.0.0, <=2.1.0.5, vers:Relion_670/650/>=2.2.4.0, <2.2.4.4
    affected: fixed in 2.1.0.6
  • Hitachi Energy Relion 670/650/SAM600-IO vers:Relion_670/650/SAM600-IO/>=2.2.1.0, <=2.2.1.8, vers:Relion_670/650/SAM600-IO/>=2.2.5.0, <2.2.5.6
    affected: fixed in 2.2.1.9

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Hitachi Energy Relion670

Classification

Weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.