Vulnerability 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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Fory | >= 0.14.0, < 1.4.0 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/wl05slf57zzoq1s4pg4tk6nx6mjyjr4bMailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/07/21/5Mailing ListThird Party Advisory
FAQ
What is CVE-2026-64608?
CVE-2026-64608 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ty...
How severe is CVE-2026-64608?
CVE-2026-64608 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-64608?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Fory.