CVE-2026-86095

Unidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation. Attackers can craft HDF5 files with oversized attribute names to overflow the destination buffer, causing memory corruption and crashes when applications enumerate attribute names.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Unidata/netcdf-c
https://github.com/Unidata/netcdf-c/blob/v4.10.1/libhdf5/hdf5attr.c
https://www.vulncheck.com/advisories/unidata-netcdf-c-through-4.10.1-out-of-bounds-write-via-oversized-hdf5-attribute-name

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-04 23:18

Updated : 2026-09-08 18:21

NVD link : CVE-2026-86095

Mitre link : CVE-2026-86095

CVE.ORG link : CVE-2026-86095

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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