CVE-2025-2309
CSIRTS triage
- What
- Heap-based buffer overflow in HDF5 type conversion logic H5T__bit_copy function.
- Who is affected
- Applications and systems using HDF5 library for scientific data handling.
- Urgency
- Medium severity (CVSS 5.3); not exploited but memory corruption risk present.
- Action
- Apply HDF5 security patch addressing CVE-2025-2309 to affected installations.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2025-2309: HDF5 Type Conversion Logic H5T__bit_copy heap-based overflowmsrc · 2026-08-06
External references
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