PT-2026-64976 · Hdf5 · Hdf5

CVE-2026-17573 · Published 2026-07-27 · Updated 2026-07-27

Positive Technologies (AI Summary)

CVSS v4.0

4.0

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions HDF5 (affected versions not specified)

Description A double free issue exists in the HDF5 library. A double free occurs when the h5repack utility processes a specially crafted HDF5 file that contains an oversized chunk size field. This flaw is triggered within the H5D chunk copy() function, which may lead to an application abort. A double free is a memory corruption error that happens when the program attempts to free the same memory location twice.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2026-17573

Affected Products

Hdf5

References · 3

• 🔥 https://github.com/HDFGroup/hdf5/issues/6124 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-17573 · Security Note
• https://t.me/CVEtracker/61346 · Telegram Post