CVE-2020-36892 - CVE House
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Status published Critical CVE-2020-36892

Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated Privilege Escalation

Vulnerability Description

Eibiz i-Media Server Digital Signage 3.8.0 contains an unauthenticated privilege escalation vulnerability in the updateUser object that allows attackers to modify user roles. Attackers can exploit the /messagebroker/amf endpoint to elevate privileges and take over user accounts by manipulating role settings without authentication.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • LiquidWorm as Gjoko Krstic of Zero Science Lab

References

More from EIBIZ Co.,Ltd.

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CVE-2020-36895
EIBIZ i-Media Server Digital Signage 3.8.0 Unauthenticated Configuration Disclosure
High 8.7
CVE-2020-36894
Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability
Critical 9.3
CVE-2020-36893
Eibiz i-Media Server Digital Signage 3.8.0 Directory Traversal Vulnerability
High 8.7

Affected Vendor

EIBIZ Co.,Ltd.

View all reports →

Affected Software

i-Media Server Digital Signage
Vulnerable Versions:
0

Timeline

Official Publish: December 10th, 2025
Last Modified: April 7th, 2026
Added to House: July 21st, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-306

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1078 Valid Accounts
Persistence
T1136 Create Account
Persistence
T1098 Account Manipulation
Privilege Escalation
T1021 Remote Services
Lateral Movement