Is CVE-2026-5445 actively exploited?

CVE-2026-5445 has no public evidence of in-the-wild exploitation as of 2026-04-14.

What is the CVSS score for CVE-2026-5445?

CVE-2026-5445 has a CVSS score of 9.1 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

How do I patch CVE-2026-5445?

Patch guidance is available from orthanc-server security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-5445.

Which products are affected by CVE-2026-5445?

1 product: orthanc-server orthanc.

Fix CVE-2026-5445 - CRITICAL orthanc-server orthanc

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: high
Weaknesses: CWE-125 · Out-of-bounds Read

Metadata

Primary Vendor: ORTHANC-SERVER
Published: 4/9/2026
Last Modified: 4/14/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-5445

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary