Out-of-bounds Read in Orthanc Dicom Server
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…
Vulnerability class: Buffer Overflow
EPSS: 0.006 (46.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Orthanc Dicom Server — versions 0
- Orthanc-server Orthanc
Weakness classification (CWE)
References
- cret@cert.org (Product)
- cret@cert.org (Not Applicable)
- cret@cert.org (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-5437?
- CVE-2026-5437 is a high-severity vulnerability in Orthanc Dicom Server, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-09.
- How severe is CVE-2026-5437?
- High severity. CVSS v3 base score is 7.5 out of 10.