CVE-2025-6516
CSIRTS triage
- What
- A heap-based buffer overflow exists in the H5F_addr_decode_len function of HDF5 library's H5Fint.c.
- Who is affected
- Applications using HDF5 library in affected versions.
- Urgency
- Medium severity (CVSS 5.3) but not exploited; standard patching applies.
- Action
- Update HDF5 library to a patched version when available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2025-6516: HDF5 H5Fint.c H5F_addr_decode_len heap-based overflowmsrc · 2026-08-06
External references
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