CENTUM series provided by Yokogawa Electric Corporation are vulnerable to cleartext storage of sensitive information. If an attacker who can login or access the computer where the affected product is installed tampers the password file stored in the computer, the user privilege which CENTUM managed may be escalated. As a result, the control system may be operated with the escalated user privilege. To exploit this vulnerability, the following prerequisites must be met: (1)An attacker has obtained user credentials where the affected product is installed, (2)CENTUM Authentication Mode is used for user authentication when CENTUM VP is used. The affected products and versions are as follows: CENTUM CS 1000, CENTUM CS 3000 (Including CENTUM CS 3000 Entry Class) R2.01.00 to R3.09.50, CENTUM VP (Including CENTUM VP Entry Class) R4.01.00 to R4.03.00, R5.01.00 to R5.04.20, and R6.01.00 and later, B/M9000 CS R5.04.01 to R5.05.01, and B/M9000 VP R6.01.01 to R7.04.51 and R8.01.01 and later
| Software | From | Fixed in |
|---|---|---|
| yokogawa / b/m9000cs | r5.04.01 | r5.05.01.x |
| yokogawa / centum_vp | r6.01.00 | r6.01.00.x |
| yokogawa / centum_vp | r5.01.00 | r5.04.20.x |
| yokogawa / centum_vp | r4.01.00 | r4.03.00.x |
| yokogawa / centum_vp_entry_class | r6.01.00 | r6.01.00.x |
| yokogawa / centum_vp_entry_class | r4.01.00 | r4.02.00.x |
| yokogawa / centum_vp_entry_class | r5.01.00 | r5.04.20.x |
| yokogawa / centum_cs_3000_entry_class | r2.01.00 | r3.09.50.x |
| yokogawa / centum_cs_3000 | r2.01.00 | r3.09.50.x |
| yokogawa / centum_cs_1000 | r2.01.00 | r3.09.50.x |
| yokogawa / exaopc | r2.01.00 | r2.10.00.x |
| yokogawa / exaopc | r1.01.00 | r1.20.00.x |
| yokogawa / exaopc | r3.01.00 | r3.01.00.x |
| yokogawa / b/m9000_vp | r8.01.01 | r8.01.01.x |
| yokogawa / b/m9000_vp | r6.01.01 | r7.04.51.x |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.