CVE-2026-56445

CRITICAL

The qrscp application's C-STORE handler uses a specific instance from attacker-supplied DICOM datasets directly in os.path.join() without sanitization, allowing file writes to arbitrary paths.

CVSS v3.1 Score

9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Published: 6/25/2026Modified: 6/26/2026

Related Intelligence (1)

CRITICALVulnerability

pydicom pynetdicom Library

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-176-01.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Successful exploitation of this vulnerability could allow an unauthenticated attacker to write to arbitrary file paths.</strong></p> <p>The following versions of pydicom pynetdicom Library are affected:</p> <ul> <li>pynetdicom >=v1.0

CVE-2026-56445
CISA Advisories

References (3)

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-176-01.jsonhttps://github.com/pydicom/pynetdicomhttps://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-176-01