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UnizonApplication · Aten

CVE-2026-9779

HIGH · 7.2 CVSS v3.0 Published 2026-06-24
Fix available
A fix is available. Upgrade to 2.7.264 or later.
See remediation →
78/100
Remediation priority · High
Remotely reachable Zero-click 8 weeks old

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 · unedited
ATEN Unizon doCryptoHugeFileToFile Improper Verification of Cryptographic Signature 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 updateWar method. The issue results from an incorrect implementation of cryptographic signature verification. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-28590.

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 confidence

ATEN Unizon contains a vulnerability in the updateWar method where cryptographic signature verification is incorrectly implemented, allowing authenticated remote attackers to bypass signature checks and upload malicious WAR files that execute code with SYSTEM privileges.

MitigationImplement proper cryptographic signature verification for update files, ensuring all WAR files are validated against a trusted certificate/signature before deployment. Require strong authentication for update operations and restrict update functionality to authorized administrators.

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
UnizonApplication
Affected:< 2.7.264

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Aten Unizon version
    Locate the Aten Unizon application and determine its version number. This is typically found in the application UI under 'About' or 'System Information', or in installation/config files
    Affected if The installed version is lower than 2.7.264 (e.g., 2.7.200, 2.6.x, etc.)
  2. Confirm updateWar functionality exists
    Verify that the updateWar method/feature is present in the Aten Unizon installation. This is typically accessible through the web administration interface under update or deployment settings
    Affected if The updateWar feature is present and accessible in the application
  3. Check web interface accessibility
    Determine if the Aten Unizon web administration interface is exposed and reachable. Attempt to access the login page or check network listening services on typical web ports
    Affected if The web interface is accessible from the network without sufficient access controls
  4. Review authentication configuration
    Examine how authentication is configured for the update functions. Check if the updateWar method requires authentication or if it can be accessed with standard user credentials
    Affected if The updateWar method can be accessed with authenticated users who should not have update privileges, or authentication can be bypassed
  5. Inspect signature verification settings
    Locate any configuration files or settings related to WAR file signature verification or update package validation. Look for options controlling cryptographic validation of updates
    Affected if Signature verification is disabled, not configured, or the configuration allows unsigned updates to be accepted

You are affected if Aten Unizon version is below 2.7.264 AND the updateWar functionality is accessible to authenticated users without proper signature validation being enforced.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 2.7.264 or later
Fixed in 2.7.264
Interim mitigation

Implement proper cryptographic signature verification for update files, ensuring all WAR files are validated against a trusted certificate/signature before deployment. Require strong authentication for update operations and restrict update functionality to authorized administrators.

Recommended fix Moderate confidence

Unizon version 2.7.264 or later

  1. 1. Navigate to the official ATEN support website (www.aten.com) or the ATEN Unizon download page.
  2. 2. Locate the ATEN Unizon software download section.
  3. 3. Download version 2.7.264 or the latest available version of Unizon.
  4. 4. Back up the current Unizon installation and configuration data.
  5. 5. Stop the Unizon service if it is currently running.
  6. 6. Install the downloaded version (2.7.264 or later) following the standard upgrade procedure.
  7. 7. Restart the Unizon service after installation completes.
  8. 8. Verify the installation by checking the Unizon version and ensuring all services are functioning properly.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Unizon Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,980
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,968.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-9779 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data