CVE-2018-8838 — A weakness in access controls in CENTUM CS 1000 all versions, CENTUM CS 3000 ver

A weakness in access controls in CENTUM CS 1000 all versions, CENTUM CS 3000 versions R3.09.50 and earlier, CENTUM CS 3000 Small versions R3.09.50 and earlier, CENTUM VP versions R6.03.10 and earlier, CENTUM VP Small versions R6.03.10 and earlier, CENTUM VP Basic versions R6.03.1

01What is this vulnerability?

A weakness in access controls in CENTUM CS 1000 all versions, CENTUM CS 3000 versions R3.09.50 and earlier, CENTUM CS 3000 Small versions R3.09.50 and earlier, CENTUM VP versions R6.03.10 and earlier, CENTUM VP Small versions R6.03.10 and earlier, CENTUM VP Basic versions R6.03.10 and earlier, Exaopc versions R3.75.00 and earlier, B/M9000 CS all versions, and B/M9000 VP versions R8.01.01 and…

02Affected products

Vendor	Product	Versions
ICS-CERT	Yokogawa CENTUM and Exaopc	CENTUM series CENTUM CS 1000 all versions CENTUM CS 3000 versions R3.09.50 and prior CENTUM CS 3000 Small versions R3.09.50 and prior CENTUM VP versions R6.03.10 and prior CENTUM VP Small versions R6.03.10 and prior CENTUM VP Basic versions R6.03.10 and prior Exaopc versions R3.75.00 and prior B/M9000 CS all versions and B/M9000 VP versions R8.01.01 and prior.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-04-17T21:00:00.000Z
• Last modified: 2024-09-17T00:30:30.233Z

09References

• ics-cert.us-cert.gov — https://ics-cert.us-cert.gov/advisories/ICSA-18-102-01