CVE-2026-26199 (GCVE-0-2026-26199)

Vulnerability from cvelistv5 – Published: 2026-07-20 14:59 – Updated: 2026-07-20 18:56
VLAI
Title
Buffer underflow in `H5Iget_name `/`H5G_get_name` if size is zero
Summary
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
Severity
5.9 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 18:56 UTC
CWE
  • CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7898 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
HDFGroup hdf5 Affected: <= 1.14.6
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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