CVE-2026-4221
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 · uneditedA vulnerability was found in Tiandy Easy7 Integrated Management Platform 7.17.0. This affects an unknown part of the file /rest/file/uploadLedImage of the component Endpoint. The manipulation of the argument File results in unrestricted upload. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
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 confidenceThe Tiandy Easy7 IMS 7.17.0 platform contains an unrestricted file upload vulnerability in the /rest/file/uploadLedImage endpoint. Remote attackers can upload arbitrary files to the server by manipulating the File argument, potentially achieving remote code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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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Identify Tiandy Easy7 IMS installationLocate the Easy7 web application by checking for the IMS web interface, looking for service processes named 'Easy7' or 'IMS', or identifying the web server hosting the platform on common ports (typically 80/443 or custom ports)Affected if Tiandy Easy7 IMS platform is deployed on the system
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Verify the installed versionAccess the web interface and look for version information in the login page, about section, or system settings. Alternatively, check any installed software inventory or documentation for the exact version numberAffected if The installed version is 7.17.0
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Confirm the vulnerable endpoint existsAttempt to access or probe the /rest/file/uploadLedImage endpoint on the web server (e.g., GET or POST request to http[s]://[host]/rest/file/uploadLedImage)Affected if The endpoint responds (even with an error) indicating it exists and is reachable
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Check endpoint accessibility and authentication requirementsSend a request to the /rest/file/uploadLedImage endpoint and analyze the response. Check whether the endpoint requires authentication or is accessible without credentialsAffected if The endpoint is accessible without proper authentication or allows unauthored file uploads
If Tiandy Easy7 IMS version 7.17.0 is running and the /rest/file/uploadLedImage endpoint is exposed and accessible (particularly without proper authentication), the environment is affected by this unrestricted file upload vulnerability.
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 dataImplement strict file type validation (allowlist approach), enforce file size limits, rename uploaded files, store them outside webroot, and require proper authentication/authorization for the upload endpoint.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-4221 — 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-2026-4221 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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