A heap buffer overflow vulnerability exists in the DICOM image decoder.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 9, 2026 · NIST NVD

   Detected

   A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.

2. Jun 17, 2026 · NIST NVD

   Updated

   A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.

Affected

• cpe orthanc-server/orthancversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-5442

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-5442

  A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer

  nvd.nist.gov

References

• Third Party Advisory · kb.cert.org
• Not Applicable · machinespirits.de
• Product · orthanc-server.com