CVE-2026-5437

An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic.

Score

CVSS 3.1 7.5 High

Status

Analyzed - cret@cert.org

Published

2026-04-09

Last modified

2026-10-26

Weaknesses

CWE-125

Affected products

• Dicom Server (Orthanc)
• Orthanc (Orthanc-server)

References

• https://www.orthanc-server.com/
• https://www.machinespirits.de/
• https://kb.cert.org/vuls/id/536588