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Vulnerability record · CVE-2026-97059 · published 24 September 2026

CVE-2026-97059: Out-of-bounds read vulnerability

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.

8.8 CVSS 4.0 High EPSS 0.35% · top 74.3% CWE-125 · Out-of-bounds read Awaiting Analysis
8.8CVSS 4.0 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
24 Sep 2026Last modified by NVD

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.

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/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:

References

LinkTags
https://github.com/DCMTK/dcmtk
https://github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libsrc/concatenationloader.cc#L334-L3
https://github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libsrc/concatenationloader.cc#L399-L4
https://github.com/DCMTK/dcmtk/commit/18379d5b8d234977cc30644e9e70d76d89c87285
https://github.com/DCMTK/dcmtk/commit/c33790827a192a598d20463af701a8b819f46ec1
https://support.dcmtk.org/redmine/issues/1281
https://www.vulncheck.com/advisories/dcmtk-through-3.7.0-heap-over-read-via-numberofframes

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Source: NIST National Vulnerability Database (record CVE-2026-97059), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.