Vulnerability · Published Jul 29, 2026 · Assigned by zdi

CVE-2026-5057ATEN Unizon RpcProvider Missing Authentication Denial-of-Service Vulnerability

High 7.5

In plain English

A high-severity missing authentication in Unizon from ATEN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.0)7.5High

Exploit odds (30 days)0.7%top 45.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

ATEN Unizon RpcProvider Missing Authentication Denial-of-Service Vulnerability. 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. Was ZDI-CAN-29041.

Affected products (as reported)

Vendor	Product	Versions
ATEN	Unizon	2.6.253.001

Weakness: CWE-306 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ZDI-26-272 x_research-advisory
vendor-provided URL vendor-advisory