CVE-2026-11833 PUBLISHED

Assigner: YokogawaGroup
Reserved: 09.06.2026 Published: 23.06.2026 Updated: 23.06.2026

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

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 8.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Yokogawa Electric Corporation
Product	FAST/TOOLS
Versions	Default: unknown affected from R9.01 to R10.04 (incl.)

Vendor	Yokogawa Electric Corporation
Product	CI Server
Versions	Default: unknown affected from R1.01 to R1.04 (incl.)

References

https://web-material3.yokogawa.com/1/39777/files/YSAR-26-0004-E.pdf

Problem Types

CWE-319 Cleartext transmission of sensitive information CWE