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CVE-2026-44038

MediumCVSS 4.8 / 10
Published Oct 8, 2026·Last modified Oct 10, 2026
Affected Components(48)
dcmtk/dcmtk
DCMTK-3.1.1
dcmtk/dcmtk
DCMTK-3.6.5+_20191213
dcmtk/dcmtk
DCMTK-3.6.1_20170228
1 / 16
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.

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Risk Scores
Base Score
4.8

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.

Threat Intelligence
1.1

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.11%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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