CVE-2022-29492Network attack vector

Service interruption via retained malformed-packet connections

Published Sep 14, 2022 · Updated Jun 4, 2025

Improper input validation in Hitachi Energy MicroSCADA Pro/X SYS600 allows remote attackers to interrupt service via malformed IEC 104 packets. The IEC 104 TCP handler drops each malformed packet but fails to close its connection, allowing connections to remain allocated. Unauthenticated network access to the IEC 104 service is sufficient; affected versions are Pro 9.2 FP2 Hotfix 4 and earlier and X 10 through 10.3.1.

CVSS severity5.3
Medium
EPSS probability0.73%
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 MicroSCADA Pro/X SYS600 allows remote attackers to interrupt service via malformed IEC 104 packets. The IEC 104 TCP handler drops each malformed packet but fails to close its connection, allowing connections to remain allocated. Unauthenticated network access to the IEC 104 service is sufficient; affected versions are Pro 9.2 FP2 Hotfix 4 and earlier and X 10 through 10.3.1.

The record

CVE
CVE-2022-29492
Published
Sep 14, 2022
Updated
Jun 4, 2025
Vendor
Hitachi Energy
Product
MicroSCADA Pro SYS600
Classifications
CWE-20, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 2025Record 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=unspecified <=9.2 FP2 Hotfix 4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hitachi Energy · MicroSCADA Pro SYS600version=unspecified <=9.2 FP2 Hotfix 4
Hitachi Energy · MicroSCADA X SYS600version=10; version=10.1; version=10.1.1; version=10.2; version=10.2.1; version=10.3; version=10.3.1

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3Hitachi EnergyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

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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-20Improper Input Validation
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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