Global buffer out-of-bounds read in DCMTK JPEG Huffman decoding
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.
CVE-2026-44038
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-44038
DCMTK
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"cpes": [
"cpe:2.3:a:offis:dcmtk:3.7.0:*:*:*:*:*:*:*"
],
"repo": "https://github.com/DCMTK/dcmtk",
"vendor": "OFFIS",
"modules": [
"dcmjpeg"
],
"product": "DCMTK",
"versions": [
{
"status": "affected",
"version": "3.7.0"
}
],
"programFiles": [
"dcmjpeg/libijg8/jdshuff.c",
"dcmjpeg/libijg12/jdshuff.c",
"dcmjpeg/libijg16/jdshuff.c"
],
"collectionURL": "https://github.com/DCMTK/dcmtk",
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-44038
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12530 · Revision 1
- Added to Heist Feed
- Publisher date