CVE-2015-6460
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 · uneditedMultiple heap-based buffer overflows in 3S-Smart CODESYS Gateway Server before 2.3.9.34 allow remote attackers to execute arbitrary code via opcode (1) 0x3ef or (2) 0x3f0.
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 confidenceHeap-based buffer overflow vulnerability in 3S-Smart CODESYS Gateway Server versions prior to 2.3.9.34 allows remote attackers to execute arbitrary code by sending specially crafted network packets containing opcodes 0x3ef or 0x3f0. The vulnerability exists in the gateway server component which handles communications between development tools and runtime systems in industrial control environments.
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< 2.3.9.34CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 CODESYS Gateway Server is installedCheck for CODESYS Gateway Server in installed programs or running services on the system. Look for processes named 'CODESYS Gateway Server' or related gateway executables.Affected if The software is present on the system
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Determine the installed version of CODESYS Gateway ServerLocate the version information for the CODESYS Gateway Server installation. This is typically found in the program's properties, about dialog, or version file within the installation directory.Affected if The installed version cannot be determined or is earlier than 2.3.9.34
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Compare installed version against affected rangeReview the version number obtained and compare it to the vulnerable range: versions prior to 2.3.9.34 are affected.Affected if The installed version is less than 2.3.9.34
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Verify network exposure of the gateway serviceDetermine if the CODESYS Gateway Server is listening on network ports and accessible from the network. Check firewall rules and network configuration.Affected if The gateway server is network-accessible and the installed version is vulnerable
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Confirm gateway server is runningCheck if the CODESYS Gateway Server service or process is currently active and handling communications.Affected if The service is running and the version is vulnerable
A system is affected if it has CODESYS Gateway Server installed with a version number lower than 2.3.9.34 and the gateway service is running and network-accessible.
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 data2.3.9.34
Upgrade CODESYS Gateway Server to version 2.3.9.34 or later to patch the heap overflow vulnerability. If immediate patching is not possible, restrict network access to the gateway server using firewalls or network segmentation, as the vulnerability is remotely exploitable without authentication.
- Consultation3.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,648.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-6460 — 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-2015-6460 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