CVE-2025-6516 | THREATINT

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.

In HDF5 bis 1.14.6 wurde eine kritische Schwachstelle gefunden. Das betrifft die Funktion H5F_addr_decode_len der Datei /hdf5/src/H5Fint.c. Durch Manipulation mit unbekannten Daten kann eine heap-based buffer overflow-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs hat dabei lokal zu erfolgen. Der Exploit steht zur öffentlichen Verfügung.

Reserved 2025-06-23 | Published 2025-06-23 | Updated 2025-06-23 | Assigner VulDB

MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

MEDIUM: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

MEDIUM: 5.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

4.3AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Heap-based Buffer Overflow

Memory Corruption

Timeline

2025-06-23:	Advisory disclosed
2025-06-23:	VulDB entry created
2025-06-23:	VulDB entry last update

Credits

Rulkallos (VulDB User) reporter

References

vuldb.com/?id.313636 (VDB-313636 | HDF5 H5Fint.c H5F_addr_decode_len heap-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.313636 (VDB-313636 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.592589 (Submit #592589 | HDF5 1.14.6 Heap-based Buffer Overflow) third-party-advisory

github.com/HDFGroup/hdf5/issues/5581 issue-tracking

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

cve.org (CVE-2025-6516)

nvd.nist.gov (CVE-2025-6516)

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