Auth bypass in Eibiz I-Media Server Digital Signage
CVE-2020-36892
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.
Vulnerability class: Broken Authentication
EPSS: 0.010 (57.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Eibiz I-media_server_digital_signage — versions 3.8.0
- Eibiz Co.,ltd. I-media Server Digital Signage — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, VDB Entry, Third Party Advisory, exploit)
- disclosure@vulncheck.com (Exploit, vendor-advisory, Third Party Advisory)
- disclosure@vulncheck.com (technical-description, Broken Link)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-36892?
- CVE-2020-36892 is a critical-severity vulnerability in Eibiz I-Media Server Digital Signage, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2025-12-10.
- How severe is CVE-2020-36892?
- Critical severity. CVSS v3 base score is 9.8 out of 10.