Technology · Hdfgroup
Hdfgroup HDF5 vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 13 vulnerabilities in Hdfgroup HDF5: 0 in the last 7 days and 5 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-120758, was published on 3 November 2026. 4 vulnerabilities in the last four weeks, up 300% on the four before (1).
- Last 7 days
- 0
- Last 90 days
- 5
- Critical, all time
- 0
- Exploited in the wild
- 0
About Hdfgroup HDF5
C library and data format for managing large amounts of numerical scientific data.
Latest Hdfgroup HDF5 vulnerabilities
- CVE-2026-120758: HDF5 NULL pointer dereference in H5HL_unprotectinfo
- CVE-2026-120756: HDF5 heap buffer over-read in object header deserializationinfo
- CVE-2026-120755: HDF5 out-of-bounds read in szip filterinfo
- CVE-2026-120689: HDF5 uncontrolled recursion in B-tree iterationinfo
- CVE-2026-92627: HDF5 heap-use-after-free in floating-point datatype conversioninfoCVSS 7.5EPSS 0.2%
- CVE-2026-17574: The HDF Group HDF5 NULL pointer dereference in H5O__dtype_decode_helperinfoCVSS 5.2
- CVE-2026-17573: The HDF Group HDF5 double free in h5repackinfoCVSS 6.7
- CVE-2026-17572: The HDF Group HDF5 heap buffer overflow in SOHM list-index deserializationinfoCVSS 5.5
- CVE-2026-26199: HDFGroup HDF5 buffer underflow in H5Iget_nameinfoCVSS 5.9
- CVE-2026-26197: HDFGroup HDF5 out-of-bounds read in H5Odtype.cinfoCVSS 5.9
- CVE-2026-29043: HDFGroup HDF5 heap buffer overflow in H5T__ref_mem_setnullmediumCVSS 5.5
- CVE-2026-34734: HDFGroup HDF5 heap use-after-free in h5dump utilityhighCVSS 7.8EPSS 0.2%
- CVE-2026-26200: HDFGroup HDF5 heap buffer overflow in H5T__conv_struct_opthighCVSS 7.8EPSS 0.2%
Most severe Hdfgroup HDF5 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-26200: HDFGroup HDF5 heap buffer overflow in H5T__conv_struct_opthighCVSS 7.8EPSS 0.2%
- CVE-2026-34734: HDFGroup HDF5 heap use-after-free in h5dump utilityhighCVSS 7.8EPSS 0.2%
- CVE-2026-29043: HDFGroup HDF5 heap buffer overflow in H5T__ref_mem_setnullmediumCVSS 5.5
- CVE-2026-92627: HDF5 heap-use-after-free in floating-point datatype conversioninfoCVSS 7.5EPSS 0.2%
- CVE-2026-17573: The HDF Group HDF5 double free in h5repackinfoCVSS 6.7
- CVE-2026-26199: HDFGroup HDF5 buffer underflow in H5Iget_nameinfoCVSS 5.9
- CVE-2026-26197: HDFGroup HDF5 out-of-bounds read in H5Odtype.cinfoCVSS 5.9
- CVE-2026-17572: The HDF Group HDF5 heap buffer overflow in SOHM list-index deserializationinfoCVSS 5.5
- CVE-2026-17574: The HDF Group HDF5 NULL pointer dereference in H5O__dtype_decode_helperinfoCVSS 5.2
- CVE-2026-120758: HDF5 NULL pointer dereference in H5HL_unprotectinfo
Vulnerabilities per week
4 vulnerabilities in the last four weeks, up 300% on the four before (1). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 1 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 4 | 0 | |
| 9 Nov 2026 | 0 | 0 |
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A live badge for a README, a status page or an internal wiki: how many Hdfgroup HDF5 vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/hdf5)<a href="https://junglewise.ai/threats/technologies/hdf5"><img src="https://junglewise.ai/threats/technologies/hdf5/badge.svg" alt="Hdfgroup HDF5 vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/hdf5.json, and this page as text at https://junglewise.ai/threats/technologies/hdf5.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Hdfgroup HDF5 vulnerabilities", https://junglewise.ai/threats/technologies/hdf5, 11 November 2026.