---
cve: "CVE-2026-33298"
severity: "HIGH"
cvss: 7.8
epss: "48%"
vendor: "ggml-org"
kev: false
exploited: false
published: "2026-03-24 00:01:40"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T20:38:06+02:00"
---

# CVE-2026-33298

> 7.8 HIGH · 🧪 PoC

## Beschreibung

llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimensions. This causes `ggml_nbytes` to return a significantly smaller size than required (e.g., 4MB instead of Exabytes), leading to a heap-based buffer overflow when the application subsequently processes the tensor. This vulnerability allows potential Remote Code Execution (RCE) via memory corruption. b7824 contains a fix.

## 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)

- 4e5b83b226919c146fbfa754641a6772bcb2d722 (Commit)

## Referenzen

- <https://github.com/ggml-org/llama.cpp/security/advisories/GHSA-96jg-mvhq-q7q7>
- <https://github.com/ggml-org/llama.cpp/releases/tag/b7824>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33298) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_