CVE-2018-13868: Hdfgroup HDF5

Critical severity, CVSS 9.8. EPSS: 1.5% 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 over-read in the function H5O_fill_old_decode in H5Ofill.c.

Affected products

• Hdfgroup HDF5: version 1.8.20 only

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