Unauthenticated Privilege Escalation in Eibiz i-Media Server Digital Signage by Eibiz
CVE-2020-36892

9.3CRITICAL

Key Information:

Vendor

Eibiz Co.,ltd.

Status
I-media Server Digital Signage
Vendor
CVE Published:
10 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36892?

The Eibiz i-Media Server Digital Signage version 3.8.0 is susceptible to an unauthenticated privilege escalation vulnerability. This flaw exists within the updateUser object and allows malicious actors to exploit the /messagebroker/amf endpoint. By manipulating user role settings without requiring any form of authentication, attackers can elevate privileges and unlawfully take over user accounts, posing significant risks to system integrity and data security.

Affected Version(s)

i-Media Server Digital Signage 0 <= 3.8.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36892 - Proof of Concept

References

https://www.exploit-db.com/exploits/48774
exploit
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-55...
vendor-advisory
http://www.eibiz.co.th
technical-description

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
JSON
.
CVE-2020-36892 : Unauthenticated Privilege Escalation in Eibiz i-Media Server Digital Signage by Eibiz