CVE-2022-28613Network attack vector

Unauthenticated reboot via unchecked MBAP length

Published May 2, 2022 · Updated Sep 25, 2024

Improper input validation in Hitachi Energy RTU500 Series CMU Firmware allows remote attackers to reboot CMUs via Modbus TCP. The HCI Modbus TCP function fails to validate MBAP-header length information before processing a crafted message, causing the receiving CMU to reboot. The function must be enabled and configured; exploitation is unauthenticated and interrupts availability without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Hitachi Energy RTU500 Series CMU Firmware allows remote attackers to reboot CMUs via Modbus TCP. The HCI Modbus TCP function fails to validate MBAP-header length information before processing a crafted message, causing the receiving CMU to reboot. The function must be enabled and configured; exploitation is unauthenticated and interrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2022-28613
Published
May 2, 2022
Updated
Sep 25, 2024
Vendor
Hitachi Energy
Product
RTU500 Series CMU Firmware
Classifications
CWE-1284, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.0.*
  2. Affected versionversion=12.2.*
  3. Affected versionversion=12.4.*
  4. Affected versionversion=12.6.*
  5. Affected versionversion=12.7.*
  6. Affected versionversion=13.2.*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hitachi Energy · RTU500 Series CMU Firmwareversion=12.0.*; version=12.2.*; version=12.4.*; version=12.6.*; version=12.7.*; version=13.2.*

Published CVSS scores

7.5Hitachi EnergyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
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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