CVE-2026-5442: fallo crítico en Orthanc DICOM Server
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.8epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Orthanc · DICOM ServerCVEs relacionadas — Orthanc DICOM Server
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-5445CRITICALOut-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)EPSS 0.7%CVE-2026-5437HIGHOut-of-Bounds Read in DicomStreamReaderEPSS 0.7%CVE-2026-5440HIGHMemory Exhaustion via Unbounded Content-LengthEPSS 0.6%CVE-2026-5443CRITICALHeap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)EPSS 0.6%CVE-2026-87020HIGHOrthanc DICOM Server Integer Overflow or WraparoundEPSS 0.6%CVE-2026-5438HIGHGzip Decompression Bomb via Content-Encoding HeaderEPSS 0.5%