CVE-2026-44034
published 2026-10-08CVE-2026-44034: 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…
PriorityP419medium4.4CVSS 3.1
AVLACLPRNUIRSUCLINAL
EPSS
0.11%
1.1th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| offis | dcmtk | — | — |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
nvdv4.04.8MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat4.4MEDIUM
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Red Hat
dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file
vendor_redhat·2026-10-08·CVSS 4.4
CVE-2026-44034 [MEDIUM] CWE-125 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file
dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file
A flaw was found in DCMTK. A heap-based out-of-bounds read vulnerability occurs in the frame decoding routine due to missing length validation on image data fragments. By enticing a user or application to process a specially crafted Run-Length Encoded (RLE) DICOM file, an attacker could trigger an out-of-bounds memory read, leading to information disclosure of adjacent heap memory or causing an application crash that results in a Denial of Service (DoS).
Statement: This vulnerability is rated as Moderate impact because exploitation requires a user or application to process an untrusted medical image file, limiting the outcome to bounded heap memory disclosure or a process crash rather than arbitrary code execution. Standard
GHSA
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 cr
ghsa_unreviewed·2026-10-08
CVE-2026-44034 [MEDIUM] CWE-125 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 cr
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file [fedora-all]
bugzilla·2026-10-08·CVSS 4.4
CVE-2026-44034 [MEDIUM] CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file [fedora-all]
CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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
Bugzilla
CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file
bugzilla·2026-10-08·CVSS 4.4
CVE-2026-44034 [MEDIUM] CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file
CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file
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.
Bugzilla
CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file [epel-all]
bugzilla·2026-10-08·CVSS 4.4
CVE-2026-44034 [MEDIUM] CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file [epel-all]
CVE-2026-44034 dcmtk: dcmtk: Information disclosure via crafted RLE DICOM file [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 fr
2026-10-08
Published