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CVE-2025-6516

HDF5 H5Fint.c H5F_addr_decode_len heap-based overflow

Published: Jun 23, 2025Updated: Apr 29, 2026 Sources: CVE List NVDCWE-119
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.3%
Top 78.2%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-119CWE-122CWE-787

Affected Products

HDF5n/a
hdf5hdfgroup
LibraryLibrary
Databases
hdfgrouposs-projectUSDatabasesaka hdf5

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://vuldb.com/?id.313636
vuldb.com
https://vuldb.com/?ctiid.313636
vuldb.com
https://vuldb.com/?submit.592589
vuldb.com
and 2 more references View all →

Timeline

Published
Jun 23, 2025
Last Updated
Apr 29, 2026

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