Vulnerability · Published Dec 10, 2025 · Assigned by VulnCheck

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

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 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.8%top 43.3% 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 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.

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-48763 exploit
Vulnerability Advisory vendor-advisory
Reference technical-description
VulnCheck Advisory: Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability third-party-advisory