What is CVE-2018-17439?

CVE-2018-17439 is a medium-severity vulnerability in Hdfgroup Hdf5, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2018-09-24.

How severe is CVE-2018-17439?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Hdfgroup Hdf5

CVE-2018-17439

An issue was discovered in the HDF HDF5 1.10.3 library. There is a stack-based buffer overflow in the function H5S_extent_get_dims() in H5S.c. Specifically, this issue occurs while converting an HDF5 file to a GIF file.

Vulnerability class: Buffer Overflow

Published 2018-09-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Hdfgroup Hdf5 — versions 1.10.3

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/SegfaultMasters/covering360/tree/master/HDF5/vuln5 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-17439?: CVE-2018-17439 is a medium-severity vulnerability in Hdfgroup Hdf5, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2018-09-24.
How severe is CVE-2018-17439?: Medium severity. CVSS v3 base score is 6.5 out of 10.