CVE-2020-25177
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 · uneditedWECON PLC Editor Versions 1.3.8 and prior has a stack-based buffer overflow vulnerability has been identified that may allow arbitrary code execution.
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 confidenceWECON PLC Editor versions 1.3.8 and prior contains a stack-based buffer overflow vulnerability that can be exploited to achieve arbitrary code execution, likely through malicious project files or input processed by the editor.
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<= 1.3.8CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 checksWork through these to decide whether this CVE applies to you.
-
Check WECON PLC Editor installed versionOpen Windows Control Panel > Programs and Features, locate 'WECON PLC Editor' or 'PlcEditor', and note the version number displayed. Alternatively, right-click the editor executable (commonly named PlcEditor.exe or similar in the installation directory) and select Properties > Details to view the File Version.Affected if The displayed version is 1.3.8 or any version lower than 1.3.8.
-
Locate the editor executable and verify version directlyNavigate to the WECON PLC Editor installation folder (commonly in C:\Program Files\WECON or C:\Program Files (x86)\WECON), locate the main executable file, right-click it, and check the version in the Details tab.Affected if The executable version is 1.3.8 or prior.
-
Identify if the editor processes untrusted project filesReview how the PLC Editor is used in your environment. Check whether users open project files (.plc, .pjw, or other proprietary formats) from external sources, shared network locations, or untrusted users without prior validation or scanning.Affected if Users routinely open project files from untrusted or external sources without verification.
-
Inspect for suspicious or unexpected project filesSearch the editor's project directories and recent file locations for project files with unusual sizes, unexpected extensions, or files that were recently modified before a suspected incident. Check the editor's recent files list for any unfamiliar project files.Affected if Unexpected project files are present, particularly from unknown sources or with anomalous characteristics.
Your environment is affected if WECON PLC Editor version 1.3.8 or lower is installed and the editor is used to open project files, especially from untrusted sources.
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 WECON PLC Editor to a version beyond 1.3.8. If immediate patching is not possible, restrict editor usage to trusted project files and network environments, and monitor for suspicious activity.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25177 — 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-2020-25177 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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