CVE-2025-6817: HDF5 H5Centry.c H5C__load_entry resource consumption
CSIRTS triage
- What
- Excessive resource consumption in H5Centry.c when processing HDF5 cache entries.
- Who is affected
- Applications processing untrusted or malicious HDF5 files.
- Urgency
- Low severity (CVSS 3.3); primarily a denial of service concern with crafted files.
- Action
- Update HDF5 library to version with resource consumption limits in cache entry handling.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-6817
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2025-68170.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-6817 | coverage & exploitation status | NVD · CVE.org |
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