CVE-2020-36894

CRITICAL EPSS 48.3%
Published Dec 10, 20256mo ago · Modified Jun 17, 20261w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Dec 10, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
48.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-306 Missing Authentication for Critical Function Authentication

Affected Products 1

VendorProductVersionRange
eibizi-media_server_digital_signage3.8.0any

References 4

  • eibiz.co.th http://www.eibiz.co.th
    Broken Link
  • exploit-db.com https://www.exploit-db.com/exploits/48763
    ExploitThird Party AdvisoryVDB Entry
  • vulncheck.com https://www.vulncheck.com/advisories/eibiz-i-media-server-digital-signage-unauthenticated-user-creation-vulnerability
    Third Party Advisory
  • zeroscience.mk https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5586.php
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.