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WinproladderApplication · Fatek

CVE-2021-38430

HIGH · 7.8 CVSS v3.1 Published 2021-10-18
Fix available
A fix is available. Upgrade to after 3.30 or later.
See remediation →
81/100
Remediation priority · High
No privileges

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 · unedited
FATEK Automation WinProladder versions 3.30 and prior proper validation of user-supplied data when parsing project files, which could result in a stack-based buffer overflow. An attacker could leverage this vulnerability 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 · high confidence

FATEK Automation WinProladder versions 3.30 and prior fail to properly validate user-supplied data when parsing project files, leading to a stack-based buffer overflow. An attacker can exploit this by crafting a malicious project file to achieve arbitrary code execution on the targeted system.

MitigationUpgrade WinProladder to a version newer than 3.30. Until then, avoid opening project files from untrusted sources and consider running the application in an isolated environment.

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
WinproladderApplication
Affected:<= 3.30

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
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 checks

Work through these to decide whether this CVE applies to you.

  1. Check if WinProladder is installed
    Search for WinProladder.exe on the system, typically found in C:\Program Files\FATEK or C:\Program Files (x86)\FATEK directories, or check the program list in Add/Remove Programs
    Affected if WinProladder is found installed on the system
  2. Determine the installed version
    Right-click WinProladder.exe, select Properties, and view the Version information; alternatively, launch the application and check Help > About
    Affected if The installed version is 3.30 or any version prior to 3.30
  3. Identify project file interaction
    Look for .prj project files or project directories associated with WinProladder; these are the files parsed by the application that trigger the vulnerable code path
    Affected if The application is used to open, create, or load project files from any source

If WinProladder version 3.30 or lower is installed and is used to open project files, the system is vulnerable to CVE-2021-38430

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to a release after 3.30
Interim mitigation

Upgrade WinProladder to a version newer than 3.30. Until then, avoid opening project files from untrusted sources and consider running the application in an isolated environment.

Fix this in Winproladder Scoped from the published advisory
  • Consultation3.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
24.0 hours of engineering $4,200
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,720.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-38430 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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