CVE-2025-6750: HDF5 H5Omtime.c H5O__mtime_new_encode heap-based overflow

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-27 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability, which was classified as problematic, has been found in HDF5 1.14.6. Affected by this issue is the function H5O__mtime_new_encode of the file src/H5Omtime.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.

Affected products

HDF5: 1.14.6

References

https://github.com/HDFGroup/hdf5/issues/5549
https://github.com/user-attachments/files/20438441/hdf5_crash_1.txt
https://vuldb.com/?ctiid.314048
https://vuldb.com/?id.314048
https://vuldb.com/?submit.601017
https://github.com/HDFGroup/hdf5/issues/5549

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