CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.8EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
09 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Orthanc · DICOM ServerWant to know if your infrastructure is exposed to this?
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