Unrated

DEBIAN-CVE-2026-86095

Type: advisorySource: OSV1 source record

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.

Announced 4 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-86095

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-86095

netcdf

Source reference: /affected/0/package/name

Affected versions: 1:4.10.0-1
Source reference: /affected/0/versions
1:4.10.0-1~exp1
Source reference: /affected/0/versions
1:4.10.1-1
Source reference: /affected/0/versions
1:4.9.0-3
Source reference: /affected/0/versions
1:4.9.1-1~exp1
Source reference: /affected/0/versions
1:4.9.1~rc1-1~exp1
Source reference: /affected/0/versions
1:4.9.1~rc2-1~exp1
Source reference: /affected/0/versions
1:4.9.2-1
Source reference: /affected/0/versions
1:4.9.2-1~exp1
Source reference: /affected/0/versions
1:4.9.2-2
Source reference: /affected/0/versions
1:4.9.2-3
Source reference: /affected/0/versions
1:4.9.2-3.1~exp1
Source reference: /affected/0/versions
1:4.9.2-4
Source reference: /affected/0/versions
1:4.9.2-4~exp1
Source reference: /affected/0/versions
1:4.9.2-5
Source reference: /affected/0/versions
1:4.9.2-6
Source reference: /affected/0/versions
1:4.9.2-7
Source reference: /affected/0/versions
1:4.9.3-1
Source reference: /affected/0/versions
1:4.9.3-1~exp1
Source reference: /affected/0/versions
1:4.9.3-1~exp2
Source reference: /affected/0/versions
1:4.9.3~rc1-1~exp1
Source reference: /affected/0/versions
1:4.9.3~rc2-1~exp1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netcdf

Source reference: /affected/1/package/name

Affected versions: 1:4.10.0-1
Source reference: /affected/1/versions
1:4.10.0-1~exp1
Source reference: /affected/1/versions
1:4.10.1-1
Source reference: /affected/1/versions
1:4.9.3-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netcdf

Source reference: /affected/2/package/name

Affected versions: 1:4.10.0-1
Source reference: /affected/2/versions
1:4.10.0-1~exp1
Source reference: /affected/2/versions
1:4.10.1-1
Source reference: /affected/2/versions
1:4.9.3-1
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netcdf-parallel

Source reference: /affected/3/package/name

Affected versions: 1:4.10.0-1
Source reference: /affected/3/versions
1:4.10.1-1
Source reference: /affected/3/versions
1:4.10.1-2
Source reference: /affected/3/versions
1:4.9.0-1
Source reference: /affected/3/versions
1:4.9.0-3
Source reference: /affected/3/versions
1:4.9.0-4
Source reference: /affected/3/versions
1:4.9.0-5
Source reference: /affected/3/versions
1:4.9.0-6
Source reference: /affected/3/versions
1:4.9.3-1
Source reference: /affected/3/versions
1:4.9.3-2
Source reference: /affected/3/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netcdf-parallel

Source reference: /affected/4/package/name

Affected versions: 1:4.10.0-1
Source reference: /affected/4/versions
1:4.10.1-1
Source reference: /affected/4/versions
1:4.10.1-2
Source reference: /affected/4/versions
1:4.9.3-2
Source reference: /affected/4/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netcdf-parallel

Source reference: /affected/5/package/name

Affected versions: 1:4.10.0-1
Source reference: /affected/5/versions
1:4.10.1-1
Source reference: /affected/5/versions
1:4.10.1-2
Source reference: /affected/5/versions
1:4.9.3-2
Source reference: /affected/5/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netcdf",
      "purl": "pkg:deb/debian/netcdf?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1:4.10.0-1",
      "1:4.10.0-1~exp1",
      "1:4.10.1-1",
      "1:4.9.0-3",
      "1:4.9.1-1~exp1",
      "1:4.9.1~rc1-1~exp1",
      "1:4.9.1~rc2-1~exp1",
      "1:4.9.2-1",
      "1:4.9.2-1~exp1",
      "1:4.9.2-2",
      "1:4.9.2-3",
      "1:4.9.2-3.1~exp1",
      "1:4.9.2-4",
      "1:4.9.2-4~exp1",
      "1:4.9.2-5",
      "1:4.9.2-6",
      "1:4.9.2-7",
      "1:4.9.3-1",
      "1:4.9.3-1~exp1",
      "1:4.9.3-1~exp2",
      "1:4.9.3~rc1-1~exp1",
      "1:4.9.3~rc2-1~exp1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86095.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netcdf",
      "purl": "pkg:deb/debian/netcdf?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:4.10.0-1",
      "1:4.10.0-1~exp1",
      "1:4.10.1-1",
      "1:4.9.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86095.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netcdf",
      "purl": "pkg:deb/debian/netcdf?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:4.10.0-1",
      "1:4.10.0-1~exp1",
      "1:4.10.1-1",
      "1:4.9.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86095.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netcdf-parallel",
      "purl": "pkg:deb/debian/netcdf-parallel?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1:4.10.0-1",
      "1:4.10.1-1",
      "1:4.10.1-2",
      "1:4.9.0-1",
      "1:4.9.0-3",
      "1:4.9.0-4",
      "1:4.9.0-5",
      "1:4.9.0-6",
      "1:4.9.3-1",
      "1:4.9.3-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86095.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netcdf-parallel",
      "purl": "pkg:deb/debian/netcdf-parallel?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:4.10.0-1",
      "1:4.10.1-1",
      "1:4.10.1-2",
      "1:4.9.3-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86095.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netcdf-parallel",
      "purl": "pkg:deb/debian/netcdf-parallel?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:4.10.0-1",
      "1:4.10.1-1",
      "1:4.10.1-2",
      "1:4.9.3-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86095.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #15048 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 00:52:13 GMT
Publisher date: Fri, 04 Sep 2026 23:18:03 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-86095 · Revision 1Source updated