Vulnerability · Published Dec 10, 2025 · Assigned by VulnCheck

CVE-2020-36892Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated Privilege Escalation

Critical 9.3

In plain English

A critical-severity missing authentication in i-Media Server Digital Signage from EIBIZ Co.,Ltd.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)1.1%top 35.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
EIBIZ Co.,Ltd.	i-Media Server Digital Signage	0 – through 3.8.0

Weakness: CWE-306 · Vector: 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

References

ExploitDB-48774 exploit
Vulnerability Advisory vendor-advisory
Reference technical-description
VulnCheck Advisory: Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated Privilege Escalation third-party-advisory