---
id: CVE-2026-105667
title: >-
  In the default configuration, the HL7 listener accepts ADT^A40 patient-merge
  messages without authenticating the sending application
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'
cwe:
  - CWE-306
vendor: J4Care
product: dcm4chee-arc-light
affected:
  - dcm4chee-arc-light 5.35.1
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:04:29.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105667'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-288-02.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-288-02'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - cve.org
epss: 0.00239
epssPercentile: 0.14843
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T15:05:51.316816Z'
ingestedAt: '2026-10-16T15:11:47.125Z'
---

## Overview

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. The archive's unmerge does not reverse this.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.