A global out-of-bounds read in the Huffman decoder of the bundled IJG JPEG libraries (dcmjpeg/libijg8, libijg12 and libijg16) of OFFIS DCMTK 3.7.0 allows an attacker to read memory beyond the extend_test[] and extend_offset[] tables, causing incorrectly decoded pixel data or a crash, via a DICOM file with a crafted JPEG stream whose Huffman table defines a difference category above 15. Huffman symbol values are not range-checked unless DCMTK is built with DCMTK_ENABLE_STRICT_HUFFMAN_TABLE_CHECK, which is disabled by default. dcmdjpeg and any application that decompresses JPEG DICOM images with DCMTK are affected. The issue is fixed in commit d6ae1bc8d5b9ae9c7300013c8c85cc2ea0fd8cf5.
Advisories

No advisories yet.

Fixes

Solution

Update to a DCMTK version that contains commit d6ae1bc8d5b9ae9c7300013c8c85cc2ea0fd8cf5. As of the publication date, no tagged release after DCMTK 3.7.0 includes this fix, so apply the commit or build from the current master branch.


Workaround

No workaround given by the vendor.

History

Thu, 08 Oct 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 08 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
Description A global out-of-bounds read in the Huffman decoder of the bundled IJG JPEG libraries (dcmjpeg/libijg8, libijg12 and libijg16) of OFFIS DCMTK 3.7.0 allows an attacker to read memory beyond the extend_test[] and extend_offset[] tables, causing incorrectly decoded pixel data or a crash, via a DICOM file with a crafted JPEG stream whose Huffman table defines a difference category above 15. Huffman symbol values are not range-checked unless DCMTK is built with DCMTK_ENABLE_STRICT_HUFFMAN_TABLE_CHECK, which is disabled by default. dcmdjpeg and any application that decompresses JPEG DICOM images with DCMTK are affected. The issue is fixed in commit d6ae1bc8d5b9ae9c7300013c8c85cc2ea0fd8cf5.
Title Global buffer out-of-bounds read in DCMTK JPEG Huffman decoding
First Time appeared Offis
Offis dcmtk
Weaknesses CWE-125
CPEs cpe:2.3:a:offis:dcmtk:3.7.0:*:*:*:*:*:*:*
Vendors & Products Offis
Offis dcmtk
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: securin

Published:

Updated: 2026-10-08T14:08:19.615Z

Reserved: 2026-05-05T02:49:00.667Z

Link: CVE-2026-44038

cve-icon Vulnrichment

Updated: 2026-10-08T14:08:15.791Z

cve-icon NVD

Status : Received

Published: 2026-10-08T13:17:17.963

Modified: 2026-10-08T15:17:54.220

Link: CVE-2026-44038

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-08T14:45:17Z

Weaknesses