A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.
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': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, '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 DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.
Title Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-04-09T14:43:43.571Z

Updated: 2026-04-14T16:34:39.322Z

Reserved: 2026-04-02T19:22:48.196Z

Link: CVE-2026-5442

cve-icon Vulnrichment

Updated: 2026-04-14T15:12:01.918Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T15:16:16.543

Modified: 2026-04-14T20:19:46.320

Link: CVE-2026-5442

cve-icon Redhat

No data.