What is CVE-2021-45832?

CVE-2021-45832 is a medium-severity vulnerability in Hdfgroup Hdf5, classified under Uncontrolled Recursion. CVSS score: 5.5/10. Published 2022-01-05.

How severe is CVE-2021-45832?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Hdfgroup Hdf5

CVE-2021-45832

A Stack-based Buffer Overflow Vulnerability exists in HDF5 1.13.1-1 at at hdf5/src/H5Eint.c, which causes a Denial of Service (context-dependent).

Published 2022-01-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Hdfgroup Hdf5 — versions 1.13.1-1

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

github.com/HDFGroup/hdf5/issues/1315 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-45832?: CVE-2021-45832 is a medium-severity vulnerability in Hdfgroup Hdf5, classified under Uncontrolled Recursion. CVSS score: 5.5/10. Published 2022-01-05.
How severe is CVE-2021-45832?: Medium severity. CVSS v3 base score is 5.5 out of 10.