CVE-2026-9779: ATEN Unizon remote code execution via improper signature verification

CVE-2026-9779 · Severity: high · CVSS 7.2 · Published 2026-06-24

ATEN Unizon, a centralized management platform for AV and IT equipment, contains a security flaw in how it handles software updates. An attacker with administrative credentials can bypass security checks to upload a malicious update package. If successful, the attacker can take full control of the server, potentially leading to data theft or complete service disruption.

Technologies: ATEN Unizon. Vendors: ATEN.

Quick answers

Is CVE-2026-9779 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-9779 being exploited in the wild.
How severe is CVE-2026-9779?
High severity, with a CVSS score of 7.2, published 24 June 2026.
Which products and versions are affected?
ATEN Unizon 2.6.253.001.
Is there a fix for CVE-2026-9779?
A patch was published on 2026-04-15: Fixed version V2.7.264.001 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-9779 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9779?
Check whether you run ATEN Unizon at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A remote code execution vulnerability exists in ATEN Unizon's 'updateWar' method within the 'doCryptoHugeFileToFile' function. The application fails to properly verify cryptographic signatures when processing update packages via the 'rest/system/information' endpoint. Specifically, the system utilizes a hard-coded secret for encryption/decryption, allowing an attacker with high-level (administrative) privileges to craft and encrypt a malicious WAR file. Upon processing this file, the application executes the payload in the context of the SYSTEM user. This vulnerability is addressed in firmware version V2.7.264.001.

Affected products

  • ATEN Unizon 2.6.253.001

Timeline

  • 2026-03-13: disclosed: Vulnerability reported to vendor
  • 2026-04-15: patched: Fixed version V2.7.264.001 released
  • 2026-06-24: advisory: Coordinated public release of advisory

References

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