CVE-2019-8396: Hdfgroup HDF5

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

A buffer overflow in H5O__layout_encode in H5Olayout.c in the HDF HDF5 through 1.10.4 library allows attackers to cause a denial of service via a crafted HDF5 file. This issue was triggered while repacking an HDF5 file, aka "Invalid write of size 2."

Affected products

• Hdfgroup HDF5: up to and including 1.10.4

Published 2019-02-17. Last modified 2026-06-17.