CVE-2026-11833
Deferred Deferred - Pending Action

Information Disclosure in FAST/TOOLS and CI Server

Publication date: 2026-06-23

Last updated on: 2026-06-23

Assigner: YokogawaGroup

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

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Meta Information

Published
2026-06-23
Last Modified
2026-06-23
Generated
2026-07-13
AI Q&A
2026-06-23
EPSS Evaluated
2026-07-12
NVD
CVE-2026-11833
EUVD
EUVD-2026-38411

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
yokogawa fast_tools From 9.01 (inc) to 10.04 (inc)
yokogawa ci_server From 1.01 (inc) to 1.04 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-319 The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

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Executive Summary

This vulnerability, identified as CVE-2026-11833, affects Yokogawa's FAST/TOOLS and Collaborative Information Server (CI Server). The issue involves the web server returning responses that contain CI Server setting information in cleartext. This sensitive information exposure could be exploited by attackers to launch further attacks.

Impact Analysis

The vulnerability can lead to the exposure of sensitive CI Server configuration details. Attackers who obtain this information may use it to perform additional attacks, potentially compromising the affected systems or gaining unauthorized access.

Mitigation Strategies

To mitigate the vulnerability CVE-2026-11833, it is recommended to update the affected products to the fixed versions: FAST/TOOLS should be updated to R10.04 SP4 and CI Server to R1.05.

Yokogawa advises performing a risk assessment before applying these updates, as there may be costs involved for customers.

Support for applying these countermeasures is available through Yokogawa's local offices.

Compliance Impact

The vulnerability involves the cleartext transmission of sensitive CI Server setting information, which could be exploited by attackers for further attacks.

Such exposure of sensitive information may impact compliance with data protection standards and regulations like GDPR and HIPAA, which require the protection of sensitive data against unauthorized access.

Organizations using the affected versions should perform a risk assessment and apply the recommended updates to mitigate the vulnerability and maintain compliance.

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