What’s Vulnerable › Vulnerabilities
CVE-2026-17572: HDF5 SOHM List Index Heap Buffer Overflow
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-27 · updated 2026-10-24
- Weakness: CWE-125
Description
Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a num_messages count exceeding list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.
Affected products
- HDF5: before 2.2.0 — fixed in 2.2.0
How to fix
Upgrade to a fixed version: HDF5 2.2.0. Check the vendor advisory for mitigations.
References
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