Out-of-bounds Read in Offis Dcmtk
CVE-2026-97059
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- support.dcmtk.org/redmine/issues/1281 (issue-tracking)
- github.com/DCMTK/dcmtk/commit/18379d5b8d234977cc30644e9e70d76d89c87285 (patch)
- github.com/DCMTK/dcmtk/commit/c33790827a192a598d20463af701a8b819f46ec1 (patch)
- github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libs… (technical-description)
- github.com/DCMTK/dcmtk/blob/ccfd10b84ff3c9a40b7b331698aedf06d421fc43/dcmfg/libs… (technical-description)
- github.com/DCMTK/dcmtk (product)
- www.vulncheck.com/advisories/dcmtk-through-3.7.0-heap-over-read-via-numberoffra… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-97059?
- CVE-2026-97059 is a high-severity vulnerability in Offis Dcmtk, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2026-09-24.
- How severe is CVE-2026-97059?
- High severity. CVSS v3 base score is 8.2 out of 10.