Overview:
A vulnerability has been found in FAST/TOOLS and CI Server. The web server may return a response containing the CI Server setting information. This information could
be exploited by an attacker for other attacks.

The affected products and versions are as follows:

FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

CI Server (All packages) R1.01 to R1.04

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00217.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Yokogawa Electric Corporation FAST/TOOLS unknown
Version Status Constraints
R9.01 affected ≤ R10.04
Yokogawa Electric Corporation CI Server unknown
Version Status Constraints
R1.01 affected ≤ R1.04

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://web-material3.yokogawa.com/1/39777/files/YSAR-26-0004-E.pdf cve-icon
History

Tue, 23 Jun 2026 03:15:00 +0000

Type Values Removed Values Added
Title Information Disclosure in Yokogawa FAST/TOOLS and CI Server via Web Server Response

Tue, 23 Jun 2026 01:45:00 +0000

Type Values Removed Values Added
Description Overview: A vulnerability has been found in FAST/TOOLS and CI Server. The web server may return a response containing the CI Server setting information. This information could be exploited by an attacker for other attacks. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04 CI Server (All packages) R1.01 to R1.04
Weaknesses CWE-319
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: YokogawaGroup

Published:

Updated: 2026-06-23T12:17:17.439Z

Reserved: 2026-06-09T22:13:24.421Z

Link: CVE-2026-11833

cve-icon Vulnrichment

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cve-icon NVD

No data.

cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-06-23T03:00:12Z

Weaknesses