J4Care dcm4che Loop with Unreachable Exit Condition
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-835.
Summary
MP4Parser does not adequately validate MP4 box sizes. A malformed box can stop parsing from making forward progress, so the same input is processed repeatedly (CWE-835). The flaw affects dcm4chee-arc-light from 5.35.1 and has a CVSS 4.0 base score of 8.7 (HIGH). An attacker needs network access only, with no privileges or user interaction, and can cause high availability impact.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade dcm4chee-arc-light to 5.35.2, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA dcm4chee-arc-light (J4Care) Fixed in 5.35.2
Timeline
- 2026-10-16 Threatist record created from CVE-2026-105273
References
More J4Care vulnerabilities
- TI-2026-75325 J4Care dcm4che Missing Authentication for Critical Function CVSS 4.0CRITICAL 9.3
- TI-2026-75334 Missing authorization in dcm4chee-arc-light enables object deletion CVSS 4.0HIGH 8.8
- TI-2026-75328 Infinite loop in J4Care dcm4chee-arc-light JPEG parser CVSS 4.0HIGH 8.7
- TI-2026-75323 Inefficient algorithm in J4Care dcm4chee-arc-light multipart parsing CVSS 4.0HIGH 8.7
- TI-2026-75326 dcm4chee-arc-light accepts unauthenticated HL7 patient-merge messages CVSS 4.0HIGH 8.7
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences