How severe is CVE-2024-32623?

CVE-2024-32623 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-32623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-32623?

CVE-2024-32623 affects Hdfgroup Hdf5. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-32623?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-32623 have an EU (EUVD) identifier?

Yes. CVE-2024-32623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-30425.

When was CVE-2024-32623 published?

CVE-2024-32623 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2024-32623

CVE-2024-32623 is a high-severity vulnerability in Hdfgroup Hdf5 with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-30425
Weakness: CWE-122
Affected product: Hdfgroup Hdf5
Published: 2024-05-14
Last modified: 2026-06-17

Description

HDF5 Library through 1.14.3 contains a heap-based buffer overflow in H5VM_array_fill in H5VM.c (called from H5S_select_elements in H5Spoint.c).

Frequently asked questions

What is CVE-2024-32623?: HDF5 Library through 1.14.3 contains a heap-based buffer overflow in H5VM_array_fill in H5VM.c (called from H5S_select_elements in H5Spoint.c).
How severe is CVE-2024-32623?: CVE-2024-32623 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-32623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-32623?: CVE-2024-32623 affects Hdfgroup Hdf5. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-32623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-32623 have an EU (EUVD) identifier?: Yes. CVE-2024-32623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-30425.
When was CVE-2024-32623 published?: CVE-2024-32623 was published on 2024-05-14 and last updated on 2026-06-17.

References

https://www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4/

Affected products (1)

cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*

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