CVE-2026-64609

EUVD-2026-46172
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 53.45%
Affected Products (NVD)
VendorProductVersion
apachefory
0.5.0 ≤
𝑥
< 1.4.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://lists.apache.org/thread/rdv22ks3b0cxh0r52w3ghxgkxqso3f1b
http://www.openwall.com/lists/oss-security/2026/07/21/6