CVE-2025-6816

HDF5 H5Ofsinfo.c H5O__fsinfo_encode heap-based overflow

CVE-2025-6816 is fixed in hdf5 on 1 platform by DEBIAN-CVE-2025-6816 (version 2.1.0+repack-1), released June 28, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

3.3

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0026

17th percentile

A vulnerability classified as problematic was found in HDF5 1.14.6. This vulnerability affects the function H5O__fsinfo_encode of the file /src/H5Ofsinfo.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
hdf5 · Debian 14	2.1.0+repack-1	DEBIAN-CVE-2025-6816	Jun 28, 2025

Details

Published
June 28, 2025
Weakness
Heap-based Buffer Overflow
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-6816

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