CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)
- State
- Published
- Severity
- 9.8 Critical
- Published
- Apr 9, 2026
- Updated
- Apr 14, 2026
- Reserved
- Apr 2, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
DICOM ServerOrthanc |
|
References
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