CVE-2026-17573 MEDIUM

CVE-2026-17573: Double Free in H5D__chunk_copy() in HDF5 via a Crafted Chunk-Index Size Field

Vendor The Hdf Group
Product HDF5
Weakness CWE-415
Published July 27, 2026
Last update July 27, 2026
View on NVD All CVEs

CVSS base score

4.0/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 27, 2026 CVE published
July 27, 2026 Record updated