Buffer overflow in Orthanc Dicom Server
CVE-2026-5444
A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (5.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/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-2026-5444?
- CVE-2026-5444 is a high-severity vulnerability in Orthanc Dicom Server, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-04-09.
- How severe is CVE-2026-5444?
- High severity. CVSS v3 base score is 7.1 out of 10.