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.
History

Wed, 15 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
CWE-680

Tue, 14 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Orthanc-server
Orthanc-server orthanc
Weaknesses CWE-787
CPEs cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*
Vendors & Products Orthanc-server
Orthanc-server orthanc

Tue, 14 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 10:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
CWE-680

Fri, 10 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Orthanc
Orthanc dicom Server
Vendors & Products Orthanc
Orthanc dicom Server

Thu, 09 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Heap Buffer Overflow in PAM Image Buffer Allocation
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-04-09T14:42:30.696Z

Updated: 2026-04-14T16:34:57.706Z

Reserved: 2026-04-02T19:23:20.072Z

Link: CVE-2026-5444

cve-icon Vulnrichment

Updated: 2026-04-14T15:07:57.475Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T15:16:16.760

Modified: 2026-04-14T20:20:10.767

Link: CVE-2026-5444

cve-icon Redhat

No data.