---
cve: "CVE-2026-64691"
severity: "CRITICAL"
cvss: 9.8
epss: "34%"
vendor: "Apple"
kev: false
exploited: false
published: "2026-07-27 21:17:08"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-08-31T12:18:56+02:00"
---

# CVE-2026-64691

> 9.8 CRITICAL

## Beschreibung

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

## CVSS-Vektor

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

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

## Referenzen

- <https://support.apple.com/en-us/128067>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64691) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_