Vulnerabilities CVE-2026-19024

CVE-2026-19024

High

Open

TLP:CLEAR

HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message

NVD CVE.org

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Description

NULL pointer dereference in H5Pget_fill_value in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.

Details

CVSS Score: 8.2
EPSS Score ⓘ: 0.13%

2.7th percentile
CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Confidence: 90%
Published: Aug 5, 2026
Last Modified: Aug 6, 2026

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