CVE-2026-5443

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-5443
A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images. Pixel length validation uses 32-bit multiplication for width and height calculations. If these values overflow, the validation check incorrectly succeeds, allowing the decoder to read and write to memory beyond allocated buffers.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://kb.cert.org/vuls/id/536588 Third Party Advisory VDB Entry
https://www.machinespirits.de/ Not Applicable
https://www.orthanc-server.com/ Product
Configurations

Configuration 1 (hide)

cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*
History

14 Apr 2026, 20:19

Type Values Removed Values Added
CWE CWE-787
CPE cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*
First Time Orthanc-server
Orthanc-server orthanc
References () https://kb.cert.org/vuls/id/536588 - () https://kb.cert.org/vuls/id/536588 - Third Party Advisory, VDB Entry
References () https://www.machinespirits.de/ - () https://www.machinespirits.de/ - Not Applicable
References () https://www.orthanc-server.com/ - () https://www.orthanc-server.com/ - Product

14 Apr 2026, 17:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.8

09 Apr 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-09 15:16

Updated : 2026-04-14 20:19

NVD link : CVE-2026-5443

Mitre link : CVE-2026-5443

CVE.ORG link : CVE-2026-5443

JSON object : View

Products Affected

orthanc-server

  • orthanc
CWE
CWE-787

Out-of-bounds Write