Heap out-of-bounds read in DCMTK RLE decodeFrame()
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.
CVE-2026-44034
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-2026-44034
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": [
"dcmdata"
],
"product": "DCMTK",
"versions": [
{
"status": "affected",
"version": "3.7.0"
}
],
"programFiles": [
"dcmdata/libsrc/dcrleccd.cc"
],
"collectionURL": "https://github.com/DCMTK/dcmtk",
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-44034
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12527 · Revision 1
- Added to Heist Feed
- Publisher date