CVE-2026-5445

critical · 9.1

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.

9.1

CVSS

0.7%

EPSS (exploit prob.)

50th

EPSS percentile

2026-04-09

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses

CWE-125

Affected products

Vendor	Product	Affected versions
orthanc-server	orthanc	< 1.12.11

Check a specific version with /api/v1/cve/match.

References

https://kb.cert.org/vuls/id/536588
https://www.machinespirits.de/
https://www.orthanc-server.com/

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-5445