CVE-2026-5445 json
Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)
published 7mo ago modified 16d ago also EUVD-2026-20926
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- orthanc-server orthanc 1.12.11
- orthanc Debian 14 1.12.10+dfsg-4
debian advisories DEBIAN-CVE-2026-5445
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6mo ago
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Affected products
- Orthanc DICOM Server
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
orthanc-server.com
/
product
-
machinespirits.de
/
not-applicable
-
kb.cert.org
/vuls/id/536588
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2026-5445
- NVD CVE-2026-5445
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