CVE-2026-97059

EUVD-2026-85885
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
offisdcmtk
𝑥
≤ 3.7.0
CNA
Common Weakness Enumeration
References
https://github.com/DCMTK/dcmtk
https://github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libsrc/concatenationloader.cc#L334-L360
https://github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libsrc/concatenationloader.cc#L399-L430
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