{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.10.1"
              },
              {
                "fixed": "4.10.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ad3d53827ab4c70f65a63eae7aad660da58e6cb5"
            }
          ],
          "repo": "https://github.com/unidata/netcdf-c",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86095.json"
  },
  "details": "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.",
  "id": "CVE-2026-86095",
  "modified": "2026-09-09T03:30:27.912060303Z",
  "published": "2026-09-04T22:38:46.036Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86095.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86095"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/unidata-netcdf-c-through-4.10.1-out-of-bounds-write-via-oversized-hdf5-attribute-name"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Unidata/netcdf-c"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/Unidata/netcdf-c/blob/v4.10.1/libhdf5/hdf5attr.c"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Unidata netcdf-c through 4.10.1 Out-of-bounds Write via Oversized HDF5 Attribute Name"
}