# CVE-2026-17574: hdf5: HDF5 contains a NULL pointer dereference vulnerability

CVE-2026-17574 is fixed in hdf5 on 1 platform by DEBIAN-CVE-2026-17574 (version 2.2.0+repack-1), released July 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-17574
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0015
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 27, 2026

## Description

HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file containing an attribute with an invalid variable-length datatype type field may cause the application to crash when the attribute is read.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | hdf5 Debian 14 | 2.2.0+repack-1 | [DEBIAN-CVE-2026-17574](https://patchblox.com/security/data/fix/linux/debian-cve-2026-17574.md) | Jul 27, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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