CVE-2026-97059
DCMTK through 3.7.0 Heap Over-read via NumberOfFrames
- State
- Published
- Severity
- 8.8 High
- Published
- Sep 24, 2026
- Updated
- Sep 30, 2026
- Reserved
- Sep 23, 2026
Description
DCMTK through 3.7.0 contains a heap over-read vulnerability in ConcatenationLoader that copies pixel data frames without validating the PixelData buffer length against the declared NumberOfFrames. Attackers can craft malicious DICOM instances declaring more frames than the buffer contains to trigger heap over-reads that crash the application or leak adjacent heap memory.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.8 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
DCMTKOFFIS |
|
References
- DCMTK Redmine Issue #1281issue-tracking
- Fixed heap over-read in ConcatenationLoaderpatch
- Validate buffer length in extractBinaryFramespatch
- https://github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libsrc/concatenationloader.cc#L334-L360technical-description
- https://github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libsrc/concatenationloader.cc#L399-L430technical-description
- https://github.com/DCMTK/dcmtkproduct
- VulnCheck Advisory: DCMTK through 3.7.0 Heap Over-read via NumberOfFramesthird-party-advisory
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