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…

PriorityP430high7.1CVSS 3.1

AVLACLPRNUIRSUCNIHAH

EPSS

0.16%

5.8th percentile

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 cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
debian	orthanc	—	—
orthanc-server	orthanc	< 1.12.11	1.12.11
orthanc	dicom_server	<= 1.12.10	—

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