CVE-2026-9778
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 · uneditedATEN Unizon ImportDeviceList Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of ATEN Unizon. Authentication is required to exploit this vulnerability. The specific flaw exists within the ImportDeviceList method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-28579.
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 confidenceATEN Unizon contains a directory traversal vulnerability in the ImportDeviceList method that allows authenticated attackers to manipulate user-supplied file paths using traversal sequences (e.g., '../') to access files outside the intended directory. Combined with the ability to perform file operations, this enables remote code execution in the context of the SYSTEM account.
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< 2.7.264CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:H/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 installed ATEN Unizon versionLocate the ATEN Unizon installation and retrieve its version number, typically found in the application about page, an installer log, or a version file within the installation directoryAffected if The installed version is below 2.7.264 (e.g., 2.7.263, 2.6.x, etc.)
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Verify ImportDeviceList method is exposedExamine the web service or API endpoints exposed by ATEN Unizon to confirm the ImportDeviceList method is available and accessibleAffected if The ImportDeviceList method is present and reachable via the application's API or web interface
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Confirm authentication is required for the endpointTest whether the ImportDeviceList endpoint requires valid credentials or can be accessed anonymouslyAffected if The endpoint accepts authenticated requests (i.e., valid credentials can be used to access it)
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Inspect file operation permissionsReview the service account permissions and file system access controls configured for the ATEN Unizon application to determine if file write operations are permitted outside the intended directoryAffected if The application service runs with elevated privileges or has broad file system write access enabling traversal to system directories
You are affected if ATEN Unizon version is below 2.7.264 AND the ImportDeviceList endpoint is accessible to authenticated users with file operation capabilities.
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 data2.7.264
Implement strict input validation and path sanitization on the ImportDeviceList method to reject path traversal sequences; validate that the resolved path remains within an allowed directory whitelist.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 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 $8,448.
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Free · runs locallyCheck whether your project pulls in CVE-2026-9778 — 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-2026-9778 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
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- Version or environment caveats, and links to real fixes
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