Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2025-6269
CVE-2025-6269:
HDF5 vulnerability analysis and mitigation
Overview
A critical vulnerability (CVE-2025-6269) was discovered in HDF5 versions up to 1.14.6. The vulnerability affects the H5C_reconstructcache_entry function in the H5Cimage.c file. This heap-based buffer overflow vulnerability was disclosed on June 19, 2025, and requires local access to exploit (VulDB, GitHub Issue).
Technical details
The vulnerability manifests as a heap-based buffer overflow in the H5C_reconstructcache_entry function within H5Cimage.c. The issue occurs during cache entry reconstruction from image data, where buffer access goes out of bounds. The vulnerability has received a CVSS v3.1 base score of 5.3 (MEDIUM) with the vector AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L. The weakness is classified under CWE-122 (Heap-based Buffer Overflow) and CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) (VulDB, GitHub Issue).
Impact
The vulnerability affects the confidentiality, integrity, and availability of the system. When exploited, it can lead to memory corruption and potential system crashes. The heap-based buffer overflow condition occurs when the buffer that can be overwritten is allocated in the heap portion of memory, typically through malloc() (VulDB).
Mitigation and workarounds
Currently, there are no known official fixes or mitigations for this vulnerability. The recommendation is to consider replacing the affected software with an alternative product until a patch is available (VulDB).
Additional resources
Source: This report was generated using AI
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