EUVD-2026-39562
GHSA-f3pc-ww42-cwqp
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Remote unauthenticated C-STORE to a listening SCP gives AV:N/AC:L/PR:N/UI:N; arbitrary file write yields I:H and A:H with no direct disclosure (C:N).
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
Arbitrary file write in the pynetdicom library's qrscp storage SCP application allows a remote, unauthenticated attacker to plant files at attacker-chosen paths on the receiving host. The qrscp C-STORE handler trusts a value taken from an incoming DICOM dataset and passes it into os.path.join() without sanitization, so a crafted instance identifier containing path-traversal sequences escapes the intended storage directory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target is running pynetdicom's qrscp application as a listening DICOM Storage SCP and that the attacker can establish a DICOM association to it (default DICOM port, typically 104 or a configured alternate) and issue a C-STORE operation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) describes remote, unauthenticated, low-complexity exploitation with no user interaction - a strong signal that any network-reachable qrscp instance is at material risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach the qrscp Storage SCP over the network opens a DICOM association and sends a crafted C-STORE request whose instance identifier embeds path-traversal sequences (e.g. '../../../') or an absolute path. … |
| Remediation | Upstream fix status is not independently confirmed from the provided data - no exact patched version is given in the references - so monitor the pydicom/pynetdicom repository (https://github.com/pydicom/pynetdicom) and the CISA advisory ICSMA-26-176-01 (https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-176-01) for the official fixed release and upgrade to it once published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all systems running pynetdicom and identify internet-facing or untrusted-network deployments. …
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
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