CVE-2021-32988
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 · uneditedFATEK Automation WinProladder Versions 3.30 and prior are vulnerable to an out-of-bounds write, which may allow an attacker to execute arbitrary code.
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 confidenceWinProladder, FATEK Automation's PLC programming software, contains an out-of-bounds write vulnerability in versions 3.30 and prior. This memory corruption flaw can be exploited to achieve arbitrary code execution, likely through a specially crafted project file or malformed input processed by the application.
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<= 3.30CVSS 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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Locate WinProladder installationSearch the system for WinProladder executable files - common locations include C:\Program Files\FATEK, C:\Program Files (x86)\FATEK, or search for files named WinProladder.exe, WPLSoft.exe, or similar FATEK-related executablesAffected if WinProladder executable is found on the system
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Determine installed versionRight-click the WinProladder executable, select Properties, and check the Details tab for version information. Alternatively, right-click the executable in Windows Explorer and select Properties > Details to view Product VersionAffected if Version is 3.30 or lower, or version information cannot be determined (unknown version may indicate vulnerable release)
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Verify application is runnableConfirm the WinProladder application can be launched and accepts project file input. Check if the application has typical project file loading functionality (.wpa, .wpl, or other FATEK project file extensions)Affected if Application is functional and capable of loading project files, which is the attack vector for this vulnerability
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Check for recent use or project filesSearch for FATEK project files (.wpa, .wpl extensions or similar) in user directories, recent documents, or the WinProladder working directory. Also check for any unusual or untrusted project files that may have been opened recentlyAffected if There are project files associated with WinProladder, especially from untrusted sources, indicating potential exposure to malformed input
A system is affected if WinProladder version 3.30 or prior is installed and the application can be launched to process project files, as exploitation requires processing a specially crafted project file by the vulnerable application.
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 dataUpgrade WinProladder to a version newer than 3.30 if a patched release is available. If no patch exists, isolate the system running WinProladder on a restricted network segment and implement compensating controls such as file integrity monitoring and restricted execution policies.
- Consultation4.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-32988 — 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-2021-32988 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
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