CVE-2021-36977: Matio Project Matio

Medium severity, CVSS 6.5. EPSS: 1.5% chance of exploitation in the next 30 days.

matio (aka MAT File I/O Library) 1.5.20 and 1.5.21 has a heap-based buffer overflow in H5MM_memcpy (called from H5MM_malloc and H5C_load_entry), related to use of HDF5 1.12.0.

Affected products

Published 2021-07-20. Last modified 2026-06-17.