{"id":"CVE-2026-44038","revision":"9b66118ff7574ba99e17c6992caf6977","records":[{"revision":"9b66118ff7574ba99e17c6992caf6977","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-44038","aliases":[],"title":"Global buffer out-of-bounds read in DCMTK JPEG Huffman decoding","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.","state":0,"publishedAt":"2026-10-08T12:55:13.689+00:00","modifiedAt":"2026-10-08T14:08:19.615+00:00","affected":[{"ecosystem":"https://github.com/DCMTK/dcmtk","name":"DCMTK","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"OFFIS\",\n                    \"product\": \"DCMTK\",\n                    \"collectionURL\": \"https://github.com/DCMTK/dcmtk\",\n                    \"repo\": \"https://github.com/DCMTK/dcmtk\",\n                    \"modules\": [\n                        \"dcmjpeg\"\n                    ],\n                    \"programFiles\": [\n                        \"dcmjpeg/libijg8/jdshuff.c\",\n                        \"dcmjpeg/libijg12/jdshuff.c\",\n                        \"dcmjpeg/libijg16/jdshuff.c\"\n                    ],\n                    \"cpes\": [\n                        \"cpe:2.3:a:offis:dcmtk:3.7.0:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unknown\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.7.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":4.8,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","score":4.4,"severity":"MEDIUM"}],"references":["https://support.dcmtk.org/redmine/issues/1221","https://github.com/DCMTK/dcmtk/commit/d6ae1bc8d5b9ae9c7300013c8c85cc2ea0fd8cf5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-44038","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-44038","identifiers":["CVE-2026-44038"]},"retained":false,"historicalAffected":[]}],"coverage":[]}