CVE-2025-41669
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 · uneditedThe Web-based Management allows a remote low privileged Engineer user to install additional APPs on the device downloaded from the PLCnext Store without implementing any data verification mechanism, leading to the capability for an Engineer user to reach arbitrary code execution with root privileges on the PLC device. A successful exploitation may allow to install a manipulated APP package, potentially impacting integrity and availability of the PLCnext Control.
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 · high confidenceThe Web-based Management interface of PLCnext Control devices lacks data verification when installing APP packages from the PLCnext Store. A low-privileged Engineer user can install manipulated APP packages, achieving arbitrary code execution with root privileges on the PLC device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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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Confirm PLCnext Control device modelIdentify the device model via web interface, console, or device labeling. PLCnext Control devices are industrial controllers from Phoenix Contact.Affected if The device is a PLCnext Control series controller
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Verify web management interface is enabledAccess the device's web interface (typically HTTPS on port 443) via browser or curl/curl equivalent. Check if the WBM (Web-based Management) portal is reachable.Affected if The web-based Management interface is accessible on the network
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Confirm APP installation feature is presentNavigate the web interface to check if APP or PLCnext Store installation functionality exists in the management menu. Look for APP/Add-in/Extension management sections.Affected if APP package installation feature is available in the web management interface
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Check for Engineer user account accessReview user accounts in the web management interface under User Management or Security settings. Identify if an account with Engineer-level privileges exists.Affected if An Engineer-level user account is configured on the device
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Verify no signature validation is enforced on APPsIn the APP management settings, check if there is any option to disable signature verification or if packages can be installed from unofficial sources without validation warnings.Affected if APP installation does not enforce cryptographic signature verification or allows unvalidated packages
If the device is a PLCnext Control with an accessible web management interface that supports APP installation for Engineer users without enforcing package signature validation, the environment is affected by CVE-2025-41669.
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 dataImplement cryptographic signature verification and integrity checks for all APP packages before installation, combined with role-based access controls restricting APP installation to authorized personnel only.
- Consultation8.0 h
- Implementation24.0 h
- Testing16.0 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 $15,616.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-41669 — 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-2025-41669 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
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data