Out-of-bounds Write Affecting netcdf package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-UBUNTU1804-NETCDF-19638384
  • published19 Sept 2026
  • disclosed4 Sept 2026

Introduced: 4 Sep 2026

CVE-2026-86095  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:18.04 netcdf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netcdf package and not the netcdf package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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 Base Scores

version 3.1