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Vulnerability record · CVE-2026-64608 · published 21 July 2026

CVE-2026-64608: Apache fory deserialization of untrusted data vulnerability

Apache · Fory

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.

9.8 CVSS 3.1 Critical EPSS 0.81% · top 44.9% CWE-502 · Deserialization of untrusted dataCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
11 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread/wl05slf57zzoq1s4pg4tk6nx6mjyjr4b Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/21/5 Mailing ListThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-64608), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.