---
cve: "CVE-2026-86095"
severity: "HIGH"
cvss: 7.8
epss: "27.9%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-09-04 23:18:03"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T12:08:17+02:00"
---

# CVE-2026-86095

> 7.8 HIGH

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- ad3d53827ab4c70f65a63eae7aad660da58e6cb5 (Commit)

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-86095) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_