CVE-2018-13871: Hdfgroup HDF5

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

An issue was discovered in the HDF HDF5 1.8.20 library. There is a heap-based buffer overflow in the function H5FL_blk_malloc in H5FL.c.

Affected products

• Hdfgroup HDF5: version 1.8.20 only

Published 2018-07-10. Last modified 2026-06-17.