Description
Hardcoded Password Vulnerability have been found in CENTUM. Affected products contain a hardcoded password for the user account (PROG) used for CENTUM Authentication Mode within the system. Under the following conditions, there is a risk that an attacker could log in as the PROG user.

The default permission for the PROG users is S1 permission (equivalent to OFFUSER). Therefore, for properly permission-controlled targets of operation and monitoring, even if an attacker user in as the PROG user, the risk of critical operations or configuration changes being performed is considered low. (If the PROG user's permissions have been changed for any reason, there is a risk that operations or configuration changes may be performed under the modified permissions. The CVSS values below are for the default permissions.)

Additionally, exploiting this vulnerability requires an attacker to already have access to the HIS screen controls. Therefore, an attacker can already operate and monitor at that point, regardless of this vulnerability.

The conditions under which this vulnerability is exploited:

If all of the following conditions are met, the affected products are vulnerable to this vulnerability.

-An attacker obtains the hardcoded password using a certain method.

-The HIS with the affected product installed is configured in CTM authentication mode.

-An attacker must have direct access to the aforementioned HIS or be able to break into it remotely using a certain method and perform screen operations.


The affected products and versions are as follows: CENTUM VP R5.01.00 to R5.04.20, R6.01.00 to R6.12.00 and R7.01.00.
Published: 2026-03-30
Score: 2.1 Low
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized access via hardcoded PROG account credentials
Action: Apply Patch
AI Analysis

Impact

A hardcoded password is stored for the PROG user in CENTUM VP’s authentication system. This allows an attacker who obtains the password to log in as PROG, potentially giving limited access with default S1 (OFFUSER) permissions. If the PROG user’s permissions have been altered, the attacker could execute configuration changes. The weakness is a default credential (CWE‑259).

Affected Systems

Yokogawa Electric Corporation CENTUM VP products are affected, specifically versions R5.01.00 through R5.04.20, R6.01.00 through R6.12.00, and R7.01.00.

Risk and Exploitability

The CVSS score of 2.1 indicates low overall severity. Exploitation requires first obtaining the hardcoded password by an unspecified method and having existing access to the HIS screen controls in CTM authentication mode; therefore the vulnerability is exploitable only when an attacker already has local or remote access to the system. The vulnerability is not listed in the CISA KEV catalog and no EPSS score is available, suggesting limited publicly known exploit activity.

Generated by OpenCVE AI on March 30, 2026 at 05:22 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest firmware or patch released by Yokogawa for CENTUM VP
  • Ensure the PROG user account retains its default OFFUSER permissions and has not been upgraded to higher rights
  • Limit or tightly control access to the HIS screen controls, enforcing proper authentication before granting entry
  • Audit and monitor the system for any unauthorized changes to user permissions or configuration settings

Generated by OpenCVE AI on March 30, 2026 at 05:22 UTC.

Tracking

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Advisories

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History

Mon, 30 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 30 Mar 2026 07:15:00 +0000

Type Values Removed Values Added
First Time appeared Yokogawa
Yokogawa centum Vp
Vendors & Products Yokogawa
Yokogawa centum Vp

Mon, 30 Mar 2026 03:30:00 +0000

Type Values Removed Values Added
Description Hardcoded Password Vulnerability have been found in CENTUM. Affected products contain a hardcoded password for the user account (PROG) used for CENTUM Authentication Mode within the system. Under the following conditions, there is a risk that an attacker could log in as the PROG user. The default permission for the PROG users is S1 permission (equivalent to OFFUSER). Therefore, for properly permission-controlled targets of operation and monitoring, even if an attacker user in as the PROG user, the risk of critical operations or configuration changes being performed is considered low. (If the PROG user's permissions have been changed for any reason, there is a risk that operations or configuration changes may be performed under the modified permissions. The CVSS values below are for the default permissions.) Additionally, exploiting this vulnerability requires an attacker to already have access to the HIS screen controls. Therefore, an attacker can already operate and monitor at that point, regardless of this vulnerability. The conditions under which this vulnerability is exploited: If all of the following conditions are met, the affected products are vulnerable to this vulnerability. -An attacker obtains the hardcoded password using a certain method. -The HIS with the affected product installed is configured in CTM authentication mode. -An attacker must have direct access to the aforementioned HIS or be able to break into it remotely using a certain method and perform screen operations. The affected products and versions are as follows: CENTUM VP R5.01.00 to R5.04.20, R6.01.00 to R6.12.00 and R7.01.00.
Weaknesses CWE-259
References
Metrics cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Yokogawa Centum Vp
cve-icon MITRE

Status: PUBLISHED

Assigner: YokogawaGroup

Published:

Updated: 2026-03-30T15:03:00.408Z

Reserved: 2025-07-17T06:32:40.148Z

Link: CVE-2025-7741

cve-icon Vulnrichment

Updated: 2026-03-30T15:02:53.928Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-30T00:16:00.943

Modified: 2026-03-30T13:26:07.647

Link: CVE-2025-7741

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-30T07:03:47Z

Weaknesses