CVE-2022-3864Network attack vector

IED restart via insufficient update signature verification

Published Jan 4, 2024 · Updated Aug 27, 2024

Improper signature verification in Hitachi Energy Relion 670/650/SAM600-IO firmware allows remote authenticated users to restart an IED. The firmware update path inadequately validates a tampered package, and processing that malicious package forces the device to restart. Exploitation requires FSTAccess mode, security-level credentials, and initiation of an update; the interruption is temporary and normal operation returns after restart.

CVSS severity4.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in Hitachi Energy Relion 670/650/SAM600-IO firmware allows remote authenticated users to restart an IED. The firmware update path inadequately validates a tampered package, and processing that malicious package forces the device to restart. Exploitation requires FSTAccess mode, security-level credentials, and initiation of an update; the interruption is temporary and normal operation returns after restart.

The record

CVE
CVE-2022-3864
Published
Jan 4, 2024
Updated
Aug 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-347, CAPEC-186, T0814
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.5Hitachi EnergyCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
4.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
CAPEC-186Malicious Software Update
T0814Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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