{"id":"CVE-2026-44034","published":"2026-10-08T13:17:17.347","lastModified":"2026-10-08T21:10:00.133","description":"A heap-based out-of-bounds read in DcmRLECodecDecoder::decodeFrame() in dcmdata/libsrc/dcrleccd.cc of OFFIS DCMTK 3.7.0 allows an attacker to read up to 63 bytes of adjacent heap memory, or cause a crash, via a crafted RLE Lossless DICOM file whose pixel data fragment is shorter than the 64-byte RLE header. The function copies 64 bytes without checking the fragment length, a check that the sibling function decode() already performs. Applications that decode RLE images frame by frame (for example, through DcmPixelData::getUncompressedFrame()) are affected. The dcmdrle command-line tool uses decode() and is not affected. The issue is fixed in commit 45469f3c30037e9c7159290e4bb74cd7b3b9ef1d.","cvssScore":4.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://github.com/DCMTK/dcmtk/commit/45469f3c30037e9c7159290e4bb74cd7b3b9ef1d","tags":[]},{"url":"https://support.dcmtk.org/redmine/issues/1213","tags":[]}],"exploitRefs":[{"url":"https://github.com/DCMTK/dcmtk/commit/45469f3c30037e9c7159290e4bb74cd7b3b9ef1d","tags":[]}],"hasPoc":true,"ai":null}