What is CVE-2025-2309?

CVE-2025-2309 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. HDF5 Type Conversion Logic H5T__bit_copy heap-based overflow

Which CVE IDs does CVE-2025-2309 cover?

CVE-2025-2309 covers the following CVE IDs: CVE-2025-2309. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-2309?

CVE-2025-2309 has a CVSS v3 base score of 5.3, published by Microsoft Security Response Center (MSRC).

CVE-2025-2309MediumCVSS 5.3

HDF5 Type Conversion Logic H5T__bit_copy heap-based overflow

Vendor

Microsoft Security Response Center (MSRC)

Published

July 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-2309 →