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.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Orthanc |
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References
History
Fri, 10 Apr 2026 10:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-119 CWE-20 |
Fri, 10 Apr 2026 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Orthanc
Orthanc dicom Server |
|
| Vendors & Products |
Orthanc
Orthanc dicom Server |
Thu, 09 Apr 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable) | |
| References |
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MITRE
Status: PUBLISHED
Assigner: certcc
Published:
Updated: 2026-04-09T14:42:51.673Z
Reserved: 2026-04-02T19:23:30.637Z
Link: CVE-2026-5445
Vulnrichment
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NVD
Status : Received
Published: 2026-04-09T15:16:16.863
Modified: 2026-04-09T15:16:16.863
Link: CVE-2026-5445
Redhat
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