What is CVE-2024-33873?

CVE-2024-33873 is a high-severity vulnerability in Hdfgroup Hdf5, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2024-05-14.

How severe is CVE-2024-33873?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Hdfgroup Hdf5

CVE-2024-33873

HDF5 Library through 1.14.3 has a heap-based buffer overflow in H5D__scatter_mem in H5Dscatgath.c.

Vulnerability class: Buffer Overflow

Published 2024-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Hdfgroup Hdf5

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4/ (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2024-33873?: CVE-2024-33873 is a high-severity vulnerability in Hdfgroup Hdf5, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2024-05-14.
How severe is CVE-2024-33873?: High severity. CVSS v3 base score is 8.8 out of 10.