CVE-2025-6269

HDF5 H5Cimage.c H5C__reconstruct_cache_entry heap-based overflow

CVE-2025-6269 is fixed in hdf5 on 1 platform by DEBIAN-CVE-2025-6269 (version 2.1.0+repack-1), released June 19, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.3

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0026

18th percentile

A vulnerability classified as critical was found in HDF5 up to 1.14.6. Affected by this vulnerability is the function H5C__reconstruct_cache_entry of the file H5Cimage.c. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirement. 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-2025-6269	Jun 19, 2025

Details

Published
June 19, 2025
Weakness
Heap-based Buffer Overflow
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-6269

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