CVE-2020-36894 json
Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability
published 2025-12-10 10 mo ago modified 2026-10-01 38 d ago also EUVD-2020-30838
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 10 mo ago
Exploit prediction
0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- exploit-db.com https://www.exploit-db.com/exploits/48763 referenced PoC, tagged "exploit" by a source, unverified
- zeroscience.mk https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5586.php referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 4.0 | 9.3 | 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 |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected products
- EIBIZ Co.,Ltd. i-Media Server Digital Signage
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
exploit-db.com
/exploits/48763
exploit, third-party-advisory, vdb-entry
-
zeroscience.mk
/en/vulnerabilities/ZSL-2020-5586.php
vendor-advisory, exploit, third-party-advisory
-
eibiz.co.th
technical-description, broken-link
-
vulncheck.com
/advisories/eibiz-i-media-server-digital-signage-unauthenticated-user-creation-vulnerability
third-party-advisory
Sources
- CVE List CVE-2020-36894
- NVD CVE-2020-36894
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.