CVE-2025-32401
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 · uneditedAn Heap-based Buffer Overflow in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to corrupt the memory of IO devices that use the library by sending a malicious RPC packet.
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 confidenceHeap-based buffer overflow in RT-Labs P-Net's RPC packet handling allows remote attackers to overflow heap memory by sending specially crafted malicious RPC packets, leading to memory corruption on IO devices running the library.
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< 1.0.2CVSS 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
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify if P-Net library is presentSearch your system for P-Net library files or examine any software bills of materials (SBOM) that reference rt-labs, p-net, or Profinet componentsAffected if The P-Net library (rt-labs) is found in your environment
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Determine installed P-Net versionCheck the version of the P-Net library binary, package, or dependency in your software inventory. Compare the version number against the affected range: versions prior to 1.0.2 are vulnerableAffected if The installed P-Net version is 1.0.1 or earlier, or any version lower than 1.0.2
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Verify RPC packet handling is in useExamine your device or application configuration to confirm that the P-Net RPC functionality is enabled and actively processing Profinet RPC packetsAffected if RPC packet handling feature is enabled and processing network traffic
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Assess network exposureReview network segmentation and access controls around devices running the P-Net library. Determine if untrusted network actors can send RPC packets to affected devicesAffected if The device is accessible on network segments where malicious RPC packets could be received
You are affected if your environment contains the P-Net library at version 1.0.1 or lower with RPC packet handling enabled and exposed to potentially untrusted network traffic.
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.
dbcve · scoped1.0.2
Update P-Net library to version beyond 1.0.1 when patch is available; restrict network access to Profinet devices and implement RPC message validation at network boundaries.
Upgrade to P-Net version 1.0.2 or later
- Identify all systems running RT-Labs P-Net library
- Check the current version of P-Net installed on each system
- If version is less than 1.0.2, upgrade to version 1.0.2 or later
- Verify the upgrade was successful by checking the new version number
- Test that IO device functionality works correctly after the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2025-32401 — 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-2025-32401 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
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