What’s Vulnerable › Vulnerabilities

CVE-2025-6816: HDF5 H5Ofsinfo.c H5O__fsinfo_encode heap-based overflow

• Severity: low (CVSS 3.3 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: 2025-06-28 · updated 2026-06-17
• Weakness: CWE-119

Description

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.

Affected products

• HDF5: 1.14.6

References

• https://github.com/HDFGroup/hdf5/issues/5571
• https://github.com/user-attachments/files/20623354/hdf5_crash_3.txt
• https://vuldb.com/?ctiid.314254
• https://vuldb.com/?id.314254
• https://vuldb.com/?submit.602291
• https://github.com/HDFGroup/hdf5/issues/5571

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