CVE-2025-6516

MEDIUM

HDF5 < 1.14.6 - Heap-Based Buffer Overflow in H5F_addr_decode_len

Title source: llm

Description

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 to be approached locally. The exploit has been disclosed to the public and may be used.

References (5)

Core 5

Core References

Third Party Advisory, VDB Entry vdb-entry technical-description

https://vuldb.com/?id.313636

Permissions Required, VDB Entry signature permissions-required

https://vuldb.com/?ctiid.313636

Third Party Advisory, VDB Entry third-party-advisory

https://vuldb.com/?submit.592589

Exploit, Issue Tracking, Third Party Advisory issue-tracking

https://github.com/HDFGroup/hdf5/issues/5581

Exploit exploit

https://github.com/user-attachments/files/20626851/reproduce.tar.gz

Scores

CVSS v3 5.3

EPSS 0.0030

EPSS Percentile 21.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-119 CWE-122 CWE-787

Status published

Products (1)

hdfgroup/hdf5 < 1.14.6

Published Jun 23, 2025

Tracked Since Feb 18, 2026