Original Article Summary

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to delete stored medical images, disclose patient information, inject forged studies, reassign patient records, overwrite files, and cause a denial-of-service condition. The following versions of J4Care dcm4che are affected: dcm4chee-arc-light 5.35.1 (CVE-2026-97851, CVE-2026-107621, CVE-2026-105273, CVE-2026-101021, CVE-2026-105279, CVE-2026-105667) CVSS Vendor Equipment v3 9.1 J4Care dcm4chee-arc-light 4 Vulnerabilities Missing Authorization, Loop with Unreachable Exit Condition ('Infinite Loop'), Inefficient Algorithmic Complexity, Missing Authentication for Critical Function Background Critical Infrastructure Sectors: Healthcare and Public Health Countries/Areas Deployed: Worldwide Company Headquarters Location: Austria Vulnerabilities Expand All + CVE-2026-97851 The storage status-change REST service allows location records still associated with DICOM instances to be changed to deletion-related states. Changing a location to TO_DELETE causes PurgeStorageScheduler to delete the referenced object from storage even though the corresponding instance record remains in the database. Read More 1 Affected Product J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. Additional Metrics Relevant CWE: CWE-862 Missing Authorization CVSS Version Base Score Base Severity Vector String 3.1 9.1 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H 4.0 8.8 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N View CVE Details CVE-2026-107621 JPEGParser can enter an infinite loop while parsing a specially crafted or truncated stream. Read More 2 Affected Products J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. Additional Metrics Relevant CWE: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4.0 9.3 CRITICAL 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 View CVE Details CVE-2026-105273 MP4Parser does not adequately validate MP4 box sizes. A malformed box can cause parsing to make no forward progress and repeatedly process the same input. Read More 3 Affected Products J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. Additional Metrics Relevant CWE: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4.0 9.3 CRITICAL 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 View CVE Details CVE-2026-101021 MultipartInputStream performs inefficient boundary matching and unnecessary buffer copying. Crafted multipart input can force excessive boundary comparisons and repeated copying. Read More 4 Affected Products J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. Additional Metrics Relevant CWE: CWE-407 Inefficient Algorithmic Complexity CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N View CVE Details CVE-2026-105279 In the default configuration, the archive accepts DICOM associations from an unregistered calling AE. A remote peer can use C-FIND and C-GET to enumerate and retrieve patient information and medical images. It can also use C-STORE to file fabricated study content under an existing patient identity. Read More 5 Affected Products J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. Additional Metrics Relevant CWE: CWE-306 Missing Authentication for Critical Function CVSS Version Base Score Base Severity Vector String 3.1 9.1 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N 4.0 9.3 CRITICAL CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N View CVE Details CVE-2026-105667 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. Read More 6 Affected Products J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. J4Care dcm4chee-arc-light: 5.35.1 Product Status: known_affected Remediations Mitigation J4Care has provided a fix for the vulnerabilities. J4Care recommends users implement release 5.35.2 or later. Additional Metrics Relevant CWE: CWE-306 Missing Authentication for Critical Function CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N 4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N View CVE Details Acknowledgments Abhinav Agarwal reported these vulnerabilities to CISA. Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. Revision History Initial Release Date: 2026-10-15 Date Revision Summary 2026-10-15 1 Initial Publication Legal Notice and Terms of Use