Security readout for executives and security teams
Plain-English summary
This vulnerability affects Yokogawa industrial control products. A local, low-privileged user could abuse weak access controls in the system message management function, potentially causing serious integrity and availability impact. It is not reported as remotely exploitable in the provided sources.
Executive priority
Treat this as a moderate operational technology risk. It does not appear remotely exploitable from the provided evidence, but compromise of a local account on affected control systems could disrupt operations or alter system behavior.
Technical view
CVE-2018-8838 is an access-control weakness in CENTUM CS, CENTUM VP, Exaopc, and B/M9000 product lines. The CVSS vector is AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H, indicating local access, high complexity, low privileges, no user interaction, and high integrity and availability impact.
Likely exposure
Exposure is most likely in industrial environments running listed Yokogawa CENTUM, Exaopc, or B/M9000 versions. The provided sources do not indicate internet-facing exploitation or remote attack paths.
Exploitation context
The sources describe a local attacker abusing message management after obtaining low privileges. CISA KEV status is false in the bundle, and no cited source states active exploitation.
Researcher notes
Do not assume remote reachability or active exploitation from this bundle. Validation should focus on exact Yokogawa product versions, local user access paths, and whether vendor-published remediations or compensating controls were applied.
Mitigation direction
- Identify any affected Yokogawa CENTUM, Exaopc, or B/M9000 installations.
- Check Yokogawa and CISA advisory guidance for supported updates or compensating controls.
- Restrict local interactive access to engineering and operator systems.
- Review local accounts and remove unnecessary low-privileged access.
- Prioritize controls protecting integrity and availability of control systems.
Validation and detection
- Inventory product names and versions against the affected version list.
- Confirm whether affected systems expose message management to local users.
- Review local account membership and privilege assignments on affected hosts.
- Check vendor advisory status before declaring remediation complete.
- Document compensating controls where upgrades are unavailable.
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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CVE-2018-8838 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://ics-cert.us-cert.gov/advisories/ICSA-18-102-01CVE reference · x_refsource_MISC
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.