What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-29 · updated 2026-10-24
• Weakness: CWE-306

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

• ATEN Unizon: 2.6.253.001

References

• https://www.aten.com/global/en/supportcenter/info/security-advisory/26/
• https://www.zerodayinitiative.com/advisories/ZDI-26-272/

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