Arbitrary file write via unsanitized SOP UID
Published Jun 30, 2026 · Updated Jun 30, 2026
Path traversal in OFFIS DCMTK 3.7.0 and earlier allows remote attackers to write files outside the selected C-GET output directory. In DcmSCU::handleCGETSession, bit-preserving storage combines the peer-supplied AffectedSOPInstanceUID with the storage directory without sanitizing path separators or traversal sequences. The client must initiate C-GET retrieval from a malicious or compromised DICOM server while bit-preserving storage mode is enabled, after which files can be written wherever the client process has permission.
Summary
What happened
Path traversal in OFFIS DCMTK 3.7.0 and earlier allows remote attackers to write files outside the selected C-GET output directory. In DcmSCU::handleCGETSession, bit-preserving storage combines the peer-supplied AffectedSOPInstanceUID with the storage directory without sanitizing path separators or traversal sequences. The client must initiate C-GET retrieval from a malicious or compromised DICOM server while bit-preserving storage mode is enabled, after which files can be written wherever the client process has permission.
The record
- CVE
- CVE-2026-50003
- Published
- Jun 30, 2026
- Updated
- Jun 30, 2026
- Vendor
- OFFIS e.V.
- Product
- DCMTK
- Classifications
- CWE-22, T1565.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 30, 2026CVE publishedPublication date reported by the CVE source.
- Jun 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=3.7.0
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Technologies
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Your stack
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