CVE-2026-11833 Yokogawa Electric Corporation CVE debrief

Who should care

Organizations using FAST/TOOLS and CI Server should be aware of this vulnerability and take necessary actions to mitigate it. The vulnerability could allow an attacker to exploit CI Server setting information, potentially leading to further attacks. It is essential to review the affected products and versions to determine if any updates or patches are required.

Technical summary

The vulnerability in FAST/TOOLS and CI Server allows an attacker to exploit CI Server setting information. The affected products and versions are FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04 and CI Server (All packages) R1.01 to R1.04. The CVSS score for this vulnerability is 8.2, indicating a high severity. The CWE-319 weakness is associated with this vulnerability.

Defensive priority

High priority should be given to patching or updating the affected FAST/TOOLS and CI Server products. Organizations should review their inventory and apply necessary updates to prevent exploitation.

Recommended defensive actions

• Review the affected products and versions to determine if any updates or patches are required.
• Apply necessary updates or patches to prevent exploitation.
• Monitor the system for any suspicious activity.
• Consider implementing additional security measures to prevent similar attacks.
• Review and update incident response plans to ensure preparedness in case of an attack.

Evidence notes

The CVE-2026-11833 vulnerability was published on 2026-06-23T02:16:30.917Z and last modified on 2026-06-23T15:06:20.217Z. The CVSS score for this vulnerability is 8.2, indicating a high severity. The CWE-319 weakness is associated with this vulnerability. The affected products and versions are FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04 and CI Server (All packages) R1.01 to R1.04.

Official resources