Security readout for executives and security teams
Plain-English summary
CVE-2022-29492 can let a network attacker disrupt affected Hitachi Energy MicroSCADA SYS600 systems by leaving TCP connections open after malformed IEC 104 traffic is received. The known impact is availability loss, not data theft or code execution.
Executive priority
Treat as a moderate OT availability risk. Prioritize sites where affected MicroSCADA systems support critical operations or where IEC 104 TCP paths are not tightly segmented.
Technical view
The issue is CWE-20 improper input validation in IEC 104 TCP packet handling. A malformed packet is dropped, but the TCP connection remains open, which may cause denial of service. CVSS 3.1 is 5.3 with network access, low complexity, no privileges, no user interaction, and low availability impact.
Likely exposure
Exposure is limited to Hitachi Energy MicroSCADA Pro SYS600 9.4 FP2 Hotfix 4 and earlier, and MicroSCADA X SYS600 versions 10 through 10.3.1, especially where IEC 104 TCP access is reachable.
Exploitation context
The bundle does not cite active exploitation, and KEV is false. The CVSS vector indicates remote network reachability and no authentication requirement, but the documented impact is denial of service through connection handling.
Researcher notes
Evidence is limited to the CVE description, CVSS data, affected version ranges, and vendor reference. No exploit proof, patch detail, or active exploitation evidence is included in the provided bundle.
Mitigation direction
- Check the Hitachi Energy advisory for approved fixed versions or mitigations.
- Prioritize remediation for internet-reachable or broadly reachable IEC 104 TCP services.
- Restrict IEC 104 TCP access to trusted operational networks where feasible.
- Monitor affected systems for abnormal long-lived or accumulating TCP connections.
Validation and detection
- Inventory MicroSCADA Pro SYS600 and MicroSCADA X SYS600 versions.
- Confirm whether affected systems expose IEC 104 TCP services.
- Compare installed versions against the affected version ranges in the advisory.
- Review operational telemetry for resource pressure or stale open connections.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2022-29492 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://search.abb.com/library/Download.aspx?DocumentID=8DBD000106&LanguageCode=en&DocumentPartId=&Action=LaunchCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.