CVE-2025-7069: HDF5 H5FSsection.c H5FS__sect_link_size heap-based overflow
CSIRTS triage
- What
- A heap-based buffer overflow exists in H5FSsection.c H5FS__sect_link_size function.
- Who is affected
- Applications using HDF5 library to process untrusted or malicious HDF5 files.
- Urgency
- Low severity (CVSS 3.3) suggests limited immediate impact, but memory corruption warrants timely patching.
- Action
- Update HDF5 library to version containing the fix for heap overflow in section 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-2025-7069
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-2025-70690.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-7069 | coverage & exploitation status | NVD · CVE.org |
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