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CVE-2026-29043

MEDIUM CVSS 3.1: 5.5 EPSS 0.03%
Updated Apr 16, 2026
Hdf5
Parameter Value
CVSS 5.5 (MEDIUM)
Affected Versions before 1.14.1-2
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Hdf5
Public PoC No

HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Hdfgroup Hdf5
cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*
<= 1.14.1-2

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