Buffer overflow in Hdfgroup Hdf5
CVE-2025-6516
A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (34.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Hdfgroup Hdf5
- N/a Hdf5 — versions 1.14.0, 1.14.1, 1.14.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VDB-313636 | HDF5 H5Fint.c H5F_addr_decode_len heap-based overflow (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-313636 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #592589 | HDF5 1.14.6 Heap-based Buffer Overflow (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (issue-tracking, Exploit, Third Party Advisory, Issue Tracking)
- cna@vuldb.com (Exploit, exploit)
Frequently asked questions
- What is CVE-2025-6516?
- CVE-2025-6516 is a medium-severity vulnerability in Hdfgroup Hdf5, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2025-06-23.
- How severe is CVE-2025-6516?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-6516 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.