CVE-2025-6816

HDF5 H5Ofsinfo.c H5O__fsinfo_encode heap-based overflow

State: Published
Severity: 4.8 Medium
Published: Jun 28, 2025
Updated: Jun 30, 2025
Reserved: Jun 27, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	3.3 Low	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R	VulDB
3.0	3.3 Low	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R	VulDB
2.0	1.7 Low	AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-122 Heap-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
HDF5n/a	1.14.6Affected

References

VDB-314254 | HDF5 H5Ofsinfo.c H5O__fsinfo_encode heap-based overflowvdb-entrytechnical-description
VDB-314254 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #602291 | HDFGroup HDF5 hdf5 1.14.6 (commit 17c16b6) Heap-based Buffer Overflowthird-party-advisory
https://github.com/HDFGroup/hdf5/issues/5571issue-tracking
https://github.com/user-attachments/files/20623354/hdf5_crash_3.txtexploit

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.