CVE-2026-64609

CVE-2026-64609: Apache Fory, Apache Fory: Out-of-Bounds Read via sun.misc.Unsafe in zero-copy java deserialization

Vendor Apache Software Foundation
Product Apache Fory
Weakness CWE-125
Published July 21, 2026
Last update July 21, 2026

CVSS base score

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 21, 2026 CVE published
July 21, 2026 Record updated