CVE-2026-17573 | A double free vulnerability was discovered in the HDF5 libra… | CVSS 4.0 MEDIUM

Description

A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free.

Metadata

CVE ID: CVE-2026-17573
State: PUBLISHED
Assigner: HDFG
Reserved: 2026-07-27 15:07 UTC
Published: 2026-07-27 15:11 UTC
Last updated: 2026-07-27 17:27 UTC
Primary CWE: CWE-415
CWE-415 Double free
Vendor / Product: The HDF Group / HDF5
Sources: cve.org · NVD

Severity & Metrics

4.0 MEDIUM CVSS 4.0

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
The HDF Group	HDF5	Linux	<= 2.1.1

Weakness (CWE)

CWE	Source	Description
CWE-415	cna	CWE-415 Double free

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.0	MEDIUM	4.0	cna	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

References (1)

https://github.com/HDFGroup/hdf5/issues/6124