{"id":"CVE-2020-36894","title":"Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability","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…","severity":"critical","cvss":9.3,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-306"],"vendor":"EIBIZ Co.,Ltd.","product":"i-Media Server Digital Signage","affected":["i-media_server_digital_signage <= 3.8.0"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2025-12-11T15:58:10.356711Z"},"exploitAvailable":true,"published":"2025-12-10","updated":"2026-10-01","sourceUpdated":"2026-10-01T15:19:32.494Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2020-36894","references":[{"url":"https://www.exploit-db.com/exploits/48763","label":"ExploitDB-48763"},{"url":"https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5586.php","label":"Vulnerability Advisory"},{"url":"http://www.eibiz.co.th","label":"Reference"},{"url":"https://www.vulncheck.com/advisories/eibiz-i-media-server-digital-signage-unauthenticated-user-creation-vulnerability","label":"VulnCheck Advisory: Eibiz i-Media Server Digital Signage 3.8.0 Unauthenticated User Creation Vulnerability"}],"tags":["cve.org","exploit-available"],"epss":0.00798,"epssPercentile":0.54899,"ingestedAt":"2026-10-01T15:48:17.879Z","slug":"CVE-2020-36894","body":"## Overview\n\nEibiz 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.\n\n## Affected\n\n- `i-media_server_digital_signage <= 3.8.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":63,"depthScoreParts":{"impact":51.2,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[]}