CVE-2026-17572

HDF5 SOHM List Index Heap Buffer Overflow

Published Jul 27, 2026 CVSS 4.0 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*
Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Type Values Removed Values Added
First Time appeared Hdfgroup
Hdfgroup hdf5
Vendors & Products Hdfgroup
Hdfgroup hdf5
Type Values Removed Values Added
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.
Title HDF5 SOHM List Index Heap Buffer Overflow
Weaknesses CWE-125
CWE-787
References
Metrics cvssV4_0

{'score': 5.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:U'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
HDFG
Published
Updated
Jul 27, 2026, 6:37 PM
Reserved
Jul 27, 2026, 3:07 PM
Status
Analyzed
Published
Jul 27, 2026, 4:17 PM
Modified
Oct 24, 2026, 1:10 PM
Severity
Moderate
Public date
Jul 27, 2026, 3:11 PM