CVE-2026-9777
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 restoreDB 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 restoreDB 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-28578.
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 restoreDB method due to insufficient validation of user-supplied file paths. An authenticated attacker can manipulate path traversal sequences (e.g., ../../) to write or access files outside the intended directory, ultimately achieving remote code execution with SYSTEM privileges.
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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Identify installed Aten Unizon versionLocate the Aten Unizon application and check its version number (typically found in the software itself, about panel, or installed programs list)Affected if The installed version is lower than 2.7.264 (for example, 2.7.263, 2.7.200, etc.)
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Confirm restoreDB method is accessibleDetermine if the restoreDB functionality is enabled and exposed in the Aten Unizon web interface or APIAffected if The restoreDB feature is exposed and accessible without additional network segmentation or additional authentication controls beyond basic login
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Verify service account privilegesCheck the Windows service or running process for Aten Unizon to determine under which account it executesAffected if The service runs as SYSTEM, LocalSystem, or another high-privilege account rather than a restricted service account
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Review authentication token exposureAssess whether authentication tokens or session credentials for accessing Unizon can be intercepted or obtained by untrusted usersAffected if Authentication tokens are transmitted without encryption, stored in insecure locations, or accessible to unauthorized users
A defender is affected if their installed Aten Unizon version is below 2.7.264 AND the restoreDB method is accessible with their current authentication configuration.
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.
dbcve · scoped2.7.264
Implement strict whitelist-based path validation in the restoreDB function to ensure all user-supplied paths resolve within an allowed directory tree. Additionally, apply principle of least privilege to the service account and restrict authentication token exposure.
2.7.264 or later
- 1. Identify the current version of ATEN Unizon currently installed on the system
- 2. Obtain ATEN Unizon version 2.7.264 or later from the official ATEN website or trusted distribution channel
- 3. Ensure you have valid administrative credentials for ATEN Unizon (authentication is required for the exploit)
- 4. Follow ATEN's standard upgrade procedure to apply the update to the Unizon installation
- 5. After upgrading, verify the new version is 2.7.264 or later and confirm the restoreDB functionality operates correctly
- 6. Test that the path traversal vulnerability is mitigated by attempting operations with paths outside the intended directory
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-9777 — 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-2026-9777 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
- No weaponised exploit code, or anything meant to cause harm
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