CVE-2025-2924: HDF5 H5HLcache.c H5HL__fl_deserialize heap-based overflow

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-03-28 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability, which was classified as problematic, was found in HDF5 up to 1.14.6. This affects the function H5HL__fl_deserialize of the file src/H5HLcache.c. The manipulation of the argument free_block 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.

Affected products

HDF5: through 1.14.6

References

https://github.com/HDFGroup/hdf5/issues/5382
https://vuldb.com/?ctiid.301899
https://vuldb.com/?id.301899
https://vuldb.com/?submit.521170
https://github.com/HDFGroup/hdf5/issues/5382

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