Unrated severityNVD Advisory· Published Jul 21, 2026· Updated Jul 21, 2026
Apache Fory, Apache Fory: Out-of-Bounds Read via sun.misc.Unsafe in zero-copy java deserialization
CVE-2026-64609
Description
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.
Affected products
2Patches
Vulnerability mechanics
References
1- lists.apache.org/thread/rdv22ks3b0cxh0r52w3ghxgkxqso3f1bmitrevendor-advisory
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