CVE-2026-64608

Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths

Published Jul 21, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compatible mode, the field-skip paths do not correctly validate the declared field types against the actual data, so input with an inconsistent schema can cause type confusion and out-of-bounds memory access. Only the C++ implementation is affected; other language implementations of Apache Fory are not.

This issue affects Apache Fory C++: from 0.14.0 before 1.4.0.

Users are recommended to upgrade to version 1.4.0, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Apache
Apache fory
Vendors & Products Apache
Apache fory
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compatible mode, the field-skip paths do not correctly validate the declared field types against the actual data, so input with an inconsistent schema can cause type confusion and out-of-bounds memory access. Only the C++ implementation is affected; other language implementations of Apache Fory are not. This issue affects Apache Fory C++: from 0.14.0 before 1.4.0. Users are recommended to upgrade to version 1.4.0, which fixes the issue.
Title Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths
Weaknesses CWE-502
CWE-787
CWE-843
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Jul 21, 2026, 6:28 PM
Reserved
Jul 20, 2026, 8:33 AM
Status
Analyzed
Published
Jul 21, 2026, 10:16 AM
Modified
Oct 24, 2026, 8:10 PM