CVE-2025-55251
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 · uneditedHCL AION is affected by an Unrestricted File Upload vulnerability. This can allow malicious file uploads, potentially resulting in unauthorized code execution or system compromise.
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 confidenceHCL AION contains an unrestricted file upload vulnerability that allows attackers to upload malicious files without proper validation. Successful exploitation enables arbitrary code execution or full system compromise by uploading executable files (e.g., webshells, malware) to the vulnerable server.
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= 2.0.0CVSS 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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Identify if HCL AION is installedCheck for HCL AION installation directories (common paths: C:\Program Files\HCL\AION, /opt/hcl/aion, or similar), running services named 'AION', or process named 'aion' running on the systemAffected if HCL AION software is present on the system
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Determine installed version of HCL AIONLocate version information in installation directory (version.txt, about.ini) or check product details via web interface if accessibleAffected if Installed version is exactly 2.0.0
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Verify file upload functionality is exposedIdentify if web interface is running (default ports 8080, 8443, or configured HTTP/HTTPS ports) and locate file upload endpoints (look for upload, fileupload, or similar URL paths in web application)Affected if File upload web endpoint is accessible and accepts requests
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Check upload directory locationInspect web application configuration files (web.xml, application.properties, or similar) to find configured upload directory pathAffected if Upload directory is within webroot or web-accessible path
Environment is affected if HCL AION version 2.0.0 is installed AND file upload functionality is accessible without proper validation controls in place.
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 (whitelist approach), verify file content/magic bytes, store uploads outside web root with randomized filenames, and disable script execution in upload directories. Additionally, enforce authentication and authorization on all upload endpoints.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,200.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-55251 — 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-2025-55251 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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