Advisory Details

April 15th, 2026

ATEN Unizon RpcProvider Missing Authentication Denial-of-Service Vulnerability

ZDI-26-272
ZDI-CAN-29041

CVE ID CVE-2026-5057
CVSS SCORE 7.5, AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AFFECTED VENDORS ATEN
AFFECTED PRODUCTS Unizon
VULNERABILITY DETAILS

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of ATEN Unizon. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the RpcProvider class. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

ADDITIONAL DETAILS ATEN has issued an update to correct this vulnerability. More details can be found at:
https://www.aten.com/global/en/supportcenter/info/security-advisory/26/
DISCLOSURE TIMELINE
  • 2026-01-30 - Vulnerability reported to vendor
  • 2026-04-15 - Coordinated public release of advisory
  • 2026-04-15 - Advisory Updated
CREDIT Bobby Gould (@bobbygould5) of TrendAI Zero Day Initiative
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