CVE-2026-64609

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 v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/rdv22ks3b0cxh0r52w3ghxgkxqso3f1b	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/21/6	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-21 10:16

Updated : 2026-07-27 13:47

NVD link : CVE-2026-64609

Mitre link : CVE-2026-64609

CVE.ORG link : CVE-2026-64609

JSON object : View

Products Affected

apache

fory

CWE

CWE-125

Out-of-bounds Read

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