CVE-2022-32137
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 · uneditedIn multiple CODESYS products, a low privileged remote attacker may craft a request, which may cause a heap-based buffer overflow, resulting in a denial-of-service condition or memory overwrite. User interaction is not required.
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 confidenceA heap-based buffer overflow vulnerability exists in multiple CODESYS products. A low privileged remote attacker can send a crafted request that triggers the buffer overflow, potentially causing a denial-of-service condition or allowing memory overwrite.
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>= 2.0, < 2.4.7.57>= 2.0, < 2.4.7.57CVSS 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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Identify installed CODESYS productsReview installed software or running processes on the system for CODESYS Plcwinnt or CODESYS Runtime Toolkit componentsAffected if Either Codesys Plcwinnt or Codesys Runtime Toolkit is present on the system
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Determine the installed version of CODESYS PlcwinntCheck the product version through its installation directory, registry entries, or product information dialog (typically found in the product's About or Help section)Affected if The version is 2.0 or higher but below 2.4.7.57
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Determine the installed version of CODESYS Runtime ToolkitCheck the product version through its installation directory, registry entries, or product information dialog (typically found in the product's About or Help section)Affected if The version is 2.0 or higher but below 2.4.7.57
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Assess network exposure of the CODESYS serviceReview firewall rules, network configuration, and accessible ports to determine if the CODESYS runtime service is reachable from network sourcesAffected if The CODESYS service is exposed to remote network connections without proper network segmentation
The system is affected if either Codesys Plcwinnt or CodesYS Runtime Toolkit version 2.0 or higher but below 2.4.7.57 is installed and the service is network-accessible to remote attackers.
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 · scoped2.4.7.57
Apply vendor-supplied patches or updates for affected CODESYS products. If patches are unavailable, implement network segmentation and restrict access to affected systems to limit exposure to remote attackers.
CODESYS Plcwinnt and Runtime Toolkit version 2.4.7.57 or later
- 1. Identify all installations of Plcwinnt and/or Runtime Toolkit in the environment
- 2. Check current version of each installation using the product's version information
- 3. For any installation with version >= 2.0 and < 2.4.7.57, download the updated version 2.4.7.57 or later from the CODESYS customer portal (customers.codesys.com)
- 4. Follow vendor's standard upgrade procedure for the specific CODESYS product
- 5. Verify the upgrade was successful by checking the new version number
- 6. Test critical functionality to ensure the upgrade did not disrupt normal operations
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-32137 — 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-2022-32137 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
- No spam, self-promotion, credentials, or personal data