---
cve: "CVE-2026-64609"
severity: "CRITICAL"
cvss: 9.1
epss: "0.8%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-07-21 10:16:25"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T11:05:39+02:00"
---

# CVE-2026-64609

> 9.1 CRITICAL

## Beschreibung

Out-of-bounds read via sun.misc.Unsafe in Apache Fory. When out-of-band zero-copy deserialization is used, readAlignedVarUint() can read beyond the bounds of the underlying buffer. Out-of-band zero-copy deserialization is an opt-in feature; applications that do not use it are not affected.

This issue affects Apache Fory (formerly Apache Fury): from 0.5.0 before 1.4.0. Versions before 0.11.0 were published under the Maven coordinates org.apache.fury:fury-core.

Users are recommended to upgrade to version 1.4.0, which fixes the issue.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- cc91f02d95945c3534920eb075dcff60ce0b435c (Commit)

## Referenzen

- <https://lists.apache.org/thread/rdv22ks3b0cxh0r52w3ghxgkxqso3f1b>
- <http://www.openwall.com/lists/oss-security/2026/07/21/6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64609) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_