---
cve: "CVE-2026-86289"
severity: "MEDIUM"
cvss: 4.3
epss: "2.7%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-09-07 09:17:17"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T17:33:21+02:00"
---

# CVE-2026-86289

> 4.3 MEDIUM

## Beschreibung

A vulnerability was found in Ollama up to 0.31.1. This issue affects the function readGGUFV1String of the file fs/ggml/gguf.go of the component GGUF Decoder. Performing a manipulation results in integer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used. Upgrading to version 0.31.2-rc1 is capable of addressing this issue. The patch is named 67b6a1c2d45321e0cb3c04a18073f9818de7724b. It is recommended to upgrade the affected component.

## CVSS-Vektor

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

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

## Referenzen

- <https://github.com/ollama/ollama/>
- <https://github.com/ollama/ollama/commit/67b6a1c2d45321e0cb3c04a18073f9818de7724b>
- <https://github.com/ollama/ollama/issues/17033>
- <https://github.com/ollama/ollama/pull/17062>
- <https://github.com/ollama/ollama/releases/tag/v0.31.2-rc1>
- <https://vuldb.com/cve/CVE-2026-86289>
- <https://vuldb.com/submit/906136>
- <https://vuldb.com/vuln/399448>
- <https://vuldb.com/vuln/399448/cti>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-86289) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_