CVE-2026-5443 Details
Description
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.
A heap buffer overflow vulnerability has been identified in Orthanc DICOM Server versions through 1.12.10. This vulnerability occurs during the decoding of 'PALETTE COLOR' DICOM images, where pixel length validation improperly uses 32-bit multiplication for width and height calculations. This can lead to integer overflow, allowing the decoder to read and write beyond allocated memory buffers.
Users are advised to upgrade to Orthanc version 1.12.11. Consult the Orthanc documentation and release notes for guidance on patching and deployment.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 14, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://kb.cert.org/vuls/id/536588 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.machinespirits.de/ | [email protected] | Not Applicable |
| https://www.orthanc-server.com/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| orthanc-server orthanc | < 1.12.11 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 14, 2026 | Initial Analysis | [email protected] |
| Apr 14, 2026 | CVE Modified | CISA-ADP |
| Apr 9, 2026 | New CVE Received | [email protected] |