CVE-2025-6516: Hdfgroup HDF5

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

Affected products

• Hdfgroup HDF5: up to and including 1.14.6

Published 2025-06-23. Last modified 2026-06-17.