CVE-2020-6656
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 · uneditedEaton's easySoft software v7.xx prior to v7.22 are susceptible to file parsing type confusion remote code execution vulnerability. A malicious entity can execute a malicious code or make the application crash by tricking user upload a malformed .E70 file in the application. The vulnerability arises due to improper validation of user data supplied through E70 file which is causing Type Confusion.
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 confidenceType confusion vulnerability in easySoft v7.xx E70 file parser. Improper validation of data within .E70 files allows attackers to trigger type confusion during parsing, potentially leading to arbitrary code execution or application crash. User must be tricked into opening a malicious file.
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>= 7.00, < 7.20CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Check if Eaton easySoft is installedLook for easySoft in the system registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall or check Program Files for an easySoft folder. On Windows, you can also use 'Get-ItemProperty' PowerShell command to query installed software.Affected if Eaton easySoft is found installed on the system
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Determine the installed easySoft versionLocate the easySoft executable (typically in C:\Program Files\Eaton\easySoft or similar) and check its properties, or query the Windows registry for the version string under the easySoft uninstall key.Affected if The version returned is >= 7.00 and < 7.20
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Confirm .E70 file association existsCheck Windows registry for .E70 file extension association under HKCR\.E70 or HKLM\SOFTWARE\Classes\.E70 to see if easySoft is registered as the handler for .E70 files.Affected if The .E70 file extension is associated with easySoft, meaning the vulnerable parser can be triggered
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Check for recent .E70 file processing activityReview Windows Event Logs (Application/Security logs) or file system audit logs for recent .E70 file openings, or check the easySoft recent files list if accessible.Affected if Users have been opening .E70 files, indicating the attack vector is viable
The system is affected if easySoft version 7.00 through 7.19 is installed and the .E70 file parser can be invoked, which requires the software to handle .E70 files that could come 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 data7.20
Upgrade to easySoft v7.22 or later which contains the fix for this vulnerability. If upgrade is not immediately possible, implement user awareness training to prevent opening untrusted .E70 files and consider network segmentation to limit exposure.
- Consultation4.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-6656 — 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-2020-6656 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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- Version or environment caveats, and links to real fixes
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