OFFIS DCMTK 3.7.0 RLE Codec Decoder dcrleccd.cc decodeFrame out-of-bounds

Summaryinfo

A vulnerability, which was classified as problematic, was found in OFFIS DCMTK 3.7.0. Impacted is the function DcmRLECodecDecoder::decodeFrame of the file dcmdata/libsrc/dcrleccd.cc of the component RLE Codec Decoder. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2026-44034. The attack can only be executed locally. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability has been found in OFFIS DCMTK 3.7.0 and classified as problematic. This vulnerability affects the function DcmRLECodecDecoder::decodeFrame of the file dcmdata/libsrc/dcrleccd.cc of the component RLE Codec Decoder. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at support.dcmtk.org. This vulnerability was named CVE-2026-44034 since 05/05/2026. The exploitation appears to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Applying the patch 45469f3c30037e9c7159290e4bb74cd7b3b9ef1d is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• OFFIS

Name

• DCMTK

Version

• 3.7.0

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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