CVE-2021-22668
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 · uneditedDelta Industrial Automation CNCSoft ScreenEditor Versions 1.01.28 (with ScreenEditor Version 1.01.2) and prior are vulnerable to an out-of-bounds read while processing project files, 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 · high confidenceDelta Industrial Automation CNCSoft ScreenEditor contains an out-of-bounds read vulnerability when parsing specially crafted project files. An attacker can exploit this by enticing a user to open a malicious project file, potentially achieving arbitrary code execution due to the memory corruption. The vulnerability is network-exploitable with no authentication required, reflected in the critical CVSS score.
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<= 1.01.28CVSS 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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Check if CNCSoft ScreenEditor is installedSearch for the application in the Windows program directories (typically C:\Program Files\Delta Industrial Automation\CNCSoft ScreenEditor or C:\Program Files (x86)\Delta Industrial Automation\CNCSoft ScreenEditor) or review the installed programs list via Control PanelAffected if CNCSoft ScreenEditor is present on the system
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Identify the installed version numberRight-click the ScreenEditor.exe executable, select Properties, then view the Product Version field on the Details tab. Alternatively, locate the version in Add or Remove ProgramsAffected if The version cannot be determined or is 1.01.28 or lower
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Compare version against affected rangeIf a version is identified, verify it falls within the affected range: version 1.01.28 or lowerAffected if The installed version is 1.01.28 or lower (this version is vulnerable)
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Confirm .sce project file associationCheck if .sce project files are associated with CNCSoft ScreenEditor, or review recent file access logs to see if the application has opened .sce filesAffected if The software handles .sce project files from any source
A system is affected if CNCSoft ScreenEditor version 1.01.28 or lower is installed, as the out-of-bounds read vulnerability can be triggered when parsing specially crafted .sce project files.
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 dataOrganizations should upgrade to a patched version of CNCSoft ScreenEditor when released by Delta Industrial Automation. Until then, implement compensating controls such as restricting file opening to trusted sources only, network segmentation, and monitoring for suspicious .sce project file activity.
- Consultation4.0 h
- Implementation2.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-22668 — 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-2021-22668 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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