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CVE-2020-36894— Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability

Quick assessment

Affected
EIBIZ Co.,Ltd. i-Media Server Digital Signage
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.

Eibiz i-Media Server Digital Signage是泰国Eibiz公司的一个数字标牌服务器。 Eibiz i-Media Server Digital Signage 3.8.0版本存在访问控制错误漏洞，该漏洞源于AMF编码对象操作存在认证绕过，可能导致创建管理员账户。

AI Predicted 9.8 Difficulty: Easy EPSS 0.81% · P54
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I. Basic Information for CVE-2020-36894

Vulnerability Information
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Vulnerability Title
Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Eibiz i-Media Server Digital Signage 3.8.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to create admin users through AMF-encoded object manipulation. Attackers can send crafted serialized objects to the /messagebroker/amf endpoint to create administrative users without authentication, bypassing security controls.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
Eibiz i-Media Server Digital Signage 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eibiz i-Media Server Digital Signage是泰国Eibiz公司的一个数字标牌服务器。 Eibiz i-Media Server Digital Signage 3.8.0版本存在访问控制错误漏洞，该漏洞源于AMF编码对象操作存在认证绕过，可能导致创建管理员账户。
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
EIBIZ Co.,Ltd. i-Media Server Digital Signage 0 ~ 3.8.0 -

II. Public POCs for CVE-2020-36894

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III. Intelligence Information for CVE-2020-36894

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Exploits & Public PoCs for CVE-2020-36894 (1)

Other References for CVE-2020-36894 (3)

Same Patch Batch · EIBIZ Co.,Ltd. · 2025-12-10 · 4 CVEs total

CVE-2020-36895 EIBIZ i-Media Server Digital Signage 3.8.0 Unauthenticated Configuration Disclosure
CVE-2020-36893 Eibiz i-Media Server Digital Signage 3.8.0 Directory Traversal Vulnerability
CVE-2020-36892 Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated Privilege Escalation

IV. Related Vulnerabilities

Same product: i-Media Server Digital Signage
Same vendor: EIBIZ Co.,Ltd.
Same weakness: CWE-306

V. Comments for CVE-2020-36894

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