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

Quick assessment

Affected
ATEN Unizon
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ATEN Unizon是中国ATEN公司的一款应用服务器软件。 ATEN Unizon 2.6.253.001版本存在授权问题漏洞，该漏洞源于RpcProvider类缺失认证，可能导致远程攻击者造成拒绝服务。

AI Predicted 7.5 Difficulty: Trivial EPSS 0.74% · P53

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
ATEN Unizon 2.6.253.001 affected
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I. Basic Information for CVE-2026-5057

Vulnerability Information
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Vulnerability Title
ATEN Unizon RpcProvider Missing Authentication Denial-of-Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
ATEN Unizon 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ATEN Unizon是中国ATEN公司的一款应用服务器软件。 ATEN Unizon 2.6.253.001版本存在授权问题漏洞，该漏洞源于RpcProvider类缺失认证，可能导致远程攻击者造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ATEN Unizon 2.6.253.001 -

II. Public POCs for CVE-2026-5057

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III. Intelligence Information for CVE-2026-5057

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Vendor Advisories for CVE-2026-5057 (2)

IV. Related Vulnerabilities

Same product: Unizon
Same vendor: ATEN
Same weakness: CWE-306

V. Comments for CVE-2026-5057

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