{"id":"CVE-2026-105667","title":"J4Care dcm4che Missing Authentication for Critical Function","summary":"In the default configuration, the HL7 listener accepts ADT^A40 patient-merge messages without authenticating the sending application. A remote sender can reassign studies and related workflow records from one patient identity to another.…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cvssSource":"cna","cwe":["CWE-306"],"vendor":"J4Care","product":"dcm4chee-arc-light","affected":["dcm4chee-arc-light 5.35.1"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T15:05:51.316816Z"},"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:18.221Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105667","references":[{"url":"https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-288-02"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-288-02.json"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T15:11:47.125Z","slug":"CVE-2026-105667","body":"## Overview\n\nIn the default configuration, the HL7 listener accepts ADT^A40 patient-merge messages without authenticating the sending application. A remote sender can reassign studies and related workflow records from one patient identity to another. The archive's unmerge does not reverse this.\n\n## Affected\n\n- `dcm4chee-arc-light 5.35.1`\n\n## Remediation\n\nJ4Care has provided a fix for the vulnerability. J4Care recommends users implement release 5.35.2 or later.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}