CVE-2026-5444 — Heap Buffer Overflow in PAM Image Buffer Allocation

Description (CNA)

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 (CNA)

Vendor / product	Versions
Orthanc / DICOM Server	affected 0 through 1.12.10

CWE

No CWE identifiers supplied.

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.