How severe is CVE-2016-4330?

CVE-2016-4330 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-4330 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4330?

CVE-2016-4330 affects Hdfgroup Hdf5. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4330?

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.

When was CVE-2016-4330 published?

CVE-2016-4330 was published on 2016-11-18 and last updated on 2026-06-17.

CVE-2016-4330

CVE-2016-4330 is a high-severity vulnerability in Hdfgroup Hdf5 with a CVSS 3.x base score of 8.6. 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.6)
CVSS v2: 6.9
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Hdfgroup Hdf5
Published: 2016-11-18
Last modified: 2026-06-17

Description

In the HDF5 1.8.16 library's failure to check if the number of dimensions for an array read from the file is within the bounds of the space allocated for it, a heap-based buffer overflow will occur, potentially leading to arbitrary code execution.

Frequently asked questions

What is CVE-2016-4330?: In the HDF5 1.8.16 library's failure to check if the number of dimensions for an array read from the file is within the bounds of the space allocated for it, a heap-based buffer overflow will occur, potentially leading to arbitrary code execution.
How severe is CVE-2016-4330?: CVE-2016-4330 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-4330 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4330?: CVE-2016-4330 affects Hdfgroup Hdf5. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4330?: 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.
When was CVE-2016-4330 published?: CVE-2016-4330 was published on 2016-11-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hdfgroup:hdf5:1.8.16:*:*:*:*:*:*:*

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