CVE-2022-26034
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImproper authentication vulnerability in the communication protocol provided by AD (Automation Design) server of CENTUM VP R6.01.10 to R6.09.00, CENTUM VP Small R6.01.10 to R6.09.00, CENTUM VP Basic R6.01.10 to R6.09.00, and B/M9000 VP R8.01.01 to R8.03.01 allows an attacker to use the functions provided by AD server. This may lead to leakage or tampering of data managed by AD server.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceImproper authentication vulnerability in the AD (Automation Design) server communication protocol allows unauthenticated attackers to invoke AD server functions, potentially leading to unauthorized data leakage or tampering in Yokogawa CENTUM VP distributed control systems.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= r8.01.01, <= r8.03.01>= r6.01.10, <= r6.09.00>= r6.01.10, <= r06.09.00CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Yokogawa product versionLocate the CENTUM VP or B/M9000 VP installation and retrieve the version information using the Yokogawa system information utility or check the product About/Version panel in the control system interfaceAffected if The installed version falls within >= r8.01.01 and <= r8.03.01 for B/m9000 VP, or >= r6.01.10 and <= r6.09.00 for CENTUM VP
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Confirm AD server functionality is enabledCheck the AD server configuration settings within the Yokogawa control system environment to determine if the Automation Design server communication protocol is activeAffected if The AD server interface or protocol is configured and running in the environment
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Verify network accessibility of AD server portsScan network listening ports or check firewall rules to determine if the AD server communication ports are exposed to network accessAffected if AD server ports are reachable from network segments other than trusted control system networks
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Check for unauthenticated AD server accessAttempt to query or access the AD server interface without credentials to verify if authentication is being enforced (only perform this in authorized test environments)Affected if AD server functions can be invoked without providing valid authentication credentials
You are affected if the installed Yokogawa CENTUM VP or B/M9000 VP version falls within the affected ranges AND the AD server protocol is enabled and accessible on the network without authentication.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor-provided patches to upgrade to fixed versions of CENTUM VP and B/M9000 VP; implement network segmentation to restrict access to AD server interfaces.
- Consultation8.0 h
- Implementation16.0 h
- Testing24.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $15,232.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-26034 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-26034 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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