by Kastro
Paper/Archive/CVE-2026-5445

CVE-2026-5445

Orthanc DICOM Server — Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)

EPSS 0.7%CVSS 9.1
critical.is priorityof 100
38
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 51.8.518 × 2010.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images containing indices larger than the palette size cause the decoder to read beyond allocated lookup table memory and expose heap contents in the output image.

Affected

ProductAffectedFixed inSource
DICOM Server≤ 1.12.10–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

reforthanc-server.comrefmachinespirits.derefkb.cert.org/vuls/id/536588