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CVE-2026-64609

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

Published: Jul 21, 2026Updated: Jul 27, 2026 Sources: CVE List NVDCWE-125
9.1CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 61.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-125

Affected Products

apache
oss-project·USaka apache http server, apache httpd
foryLibraryLibrary
OSS Libraries / generic-library
Apache Software Foundation
oss-project·USaka apache foundation
Apache ForyOn-prem
Databases / cache-message-queue

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

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

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