CVE-2025-6270
BaseFortify
Publication date: 2025-06-19
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| hdfgroup | hdf5 | to 1.14.6 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-6270 is a heap-based buffer overflow vulnerability in the HDF5 library versions up to 1.14.6. It occurs in the function H5FS__sect_find_node within the source file H5FSsection.c. The vulnerability arises when the function improperly handles the removal of the first element from a skip list that may be empty or invalid, leading to an out-of-bounds memory read and heap memory corruption. This can cause undefined behavior, program crashes, or memory corruption due to reading or writing beyond allocated heap memory. [1, 2, 3]
How can this vulnerability impact me? :
This vulnerability can compromise the confidentiality, integrity, and availability of systems using the affected HDF5 library. Exploiting the heap-based buffer overflow can lead to program crashes or memory corruption, potentially allowing an attacker with local access to disrupt or manipulate the affected software. Since the exploit is publicly available and easy to execute locally, it poses a significant risk to systems relying on vulnerable versions of HDF5. [2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring for crashes or abnormal behavior in applications using the HDF5 library, especially during file operations like closing files. Since the issue is a heap-based buffer overflow in the function H5FS__sect_find_node, fuzz testing tools such as OSS-Fuzz's h5_extended_fuzzer or AddressSanitizer (ASAN) can be used to detect it. There are no specific network detection commands since exploitation requires local access. On a system, you can run the vulnerable HDF5 library under AddressSanitizer to catch heap-buffer-overflow errors. Example command to run a test binary with ASAN enabled: `ASAN_OPTIONS=detect_heap_buffer_overflow=1 ./your_hdf5_application`. Additionally, monitoring system logs for crashes related to HDF5 processes may help detect exploitation attempts. [1, 3]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include avoiding use of affected HDF5 versions (up to 1.14.6) and replacing the vulnerable component with a patched or alternative version if available. Since no known mitigations or countermeasures have been identified, restricting local access to trusted users only is important to prevent exploitation. Monitoring for updates from the HDF5 project and applying patches promptly once released is recommended. If possible, limit or disable functionality that triggers the vulnerable function until a fix is applied. [2]