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Vulnerability record · CVE-2020-36894 · published 10 December 2025

CVE-2020-36894: Eibiz i-media server digital signage missing authentication for critical function vulnerability

Eibiz · I Media Server Digital Signage

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.

9.3 CVSS 4.0 Critical EPSS 0.80% · top 45.3% CWE-306 · Missing authentication for critical function
9.3CVSS 4.0 base score
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 3 tagged exploit
17 Jun 2026Last modified by NVD

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: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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2020-36892Eibiz i-media server digital signage missing authentication for critical function vulnerabilityEibiz i-Media Server Digital Signage 3.8.0 contains an unauthenticated privilege escalation vulnerability in the updateUser object that allows attack…EPSS 1.1%8.7CVE-2020-36893Eibiz i-media server digital signage path traversal vulnerabilityEibiz i-Media Server Digital Signage 3.8.0 contains a directory traversal vulnerability that allows unauthenticated remote attackers to access files …EPSS 1.6%8.7CVE-2020-36895Eibiz i-media server digital signage insecure direct object reference vulnerabilityEIBIZ i-Media Server Digital Signage 3.8.0 contains an unauthenticated configuration disclosure vulnerability that allows remote attackers to access …EPSS 0.73%8.8CVE-2026-67277MikroTik RouterOS btest missing authentication leaks kernel memory and crashes kernelRouterOS accepts a "related" btest connection before the primary session is authenticated, letting an unauthenticated client start an IPv4 UDP test. …KEVEPSS 1.6%analysed8.8CVE-2026-59822LiteLLM MCP endpoint auth bypass via OAuth2 passthrough fallbackLiteLLM's MCP Streamable HTTP endpoint, prior to 1.84.0, let an unauthenticated attacker send a fabricated Authorization header that triggered an OAu…KEVEPSS 0.84%analysed9.3CVE-2026-72529TrueConf Server missing authentication allows remote script executionTrueConf Server versions 5.3.X through 5.3.9, 5.4.X through 5.4.9, 5.5.X through 5.5.5, and earlier expose an undocumented function on port 4307/TCP …KEVEPSS 1.5%analysed9.8CVE-2026-46817Oracle E-Business Suite Payments missing authentication allows takeoverOracle Payments in Oracle E-Business Suite 12.2.3 through 12.2.15 contains an easily exploitable flaw in the File Transmission component. An unauthen…KEVEPSS 0.81%analysed9.8CVE-2026-56164Microsoft SharePoint Server missing authentication allows privilege elevationMicrosoft Office SharePoint Server contains a missing authentication flaw in a critical function (CWE-306), letting an unauthenticated attacker reach…KEVEPSS 1.0%analysed

Source: NIST National Vulnerability Database (record CVE-2020-36894), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.