CVE-2024-32621: Hdfgroup HDF5

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

HDF5 Library through 1.14.3 contains a heap-based buffer overflow in H5HG_read in H5HG.c (called from H5VL__native_blob_get in H5VLnative_blob.c), resulting in the corruption of the instruction pointer.

Affected products

• Hdfgroup HDF5: before 1.14.4 (fixed in 1.14.4)

Published 2024-05-14. Last modified 2026-06-17.