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CVE-2025-6818

HDF5 H5Ochunk.c H5O__chunk_protect heap-based overflow

Published: Jun 28, 2025Updated: Apr 29, 2026 Sources: CVE List NVDCWE-119
3.3LOW
NVD MITRE
EPSS Score
0.2%
Top 85.3%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
No Fix Available

Description

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.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.

No summary for this CVE yet.

CVSS Vector Breakdown

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

CWE-119CWE-122

Affected Products

HDF5n/a
hdf5hdfgroup
LibraryLibrary
Databases
hdfgrouposs-projectUSDatabasesaka hdf5

Exploitability

2 exploit sources identified

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

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://vuldb.com/?id.314256
vuldb.com
https://vuldb.com/?ctiid.314256
vuldb.com
https://vuldb.com/?submit.602326
vuldb.com
and 2 more references View all →

Timeline

Published
Jun 28, 2025
Last Updated
Apr 29, 2026

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